diff --git a/Makefile b/Makefile
index 8811642..7d3a4f4 100644
--- a/Makefile
+++ b/Makefile
@@ -35,16 +35,16 @@ C = $(shell find . '(' -name '*.c' -o -name '*.cc' ')')
 INCLUDES = -I/usr/local/include
 LIBS = -L/usr/local/lib
 
-tippecanoe: geojson.o jsonpull.o vector_tile.pb.o tile.o clip.o pool.o mbtiles.o geometry.o projection.o memfile.o clipper/clipper.o protobuf.o
+tippecanoe: geojson.o jsonpull.o vector_tile.pb.o tile.o clip.o pool.o mbtiles.o geometry.o projection.o memfile.o clipper/clipper.o mvt.o
 	$(CXX) $(PG) $(LIBS) -O3 -g -Wall $(CXXFLAGS) -o $@ $^ $(LDFLAGS) -lm -lz -lprotobuf-lite -lsqlite3 -lpthread
 
 tippecanoe-enumerate: enumerate.o
 	$(CC) $(PG) $(LIBS) -O3 -g -Wall $(CFLAGS) -o $@ $^ $(LDFLAGS) -lsqlite3
 
-tippecanoe-decode: decode.o vector_tile.pb.o projection.o protobuf.o
+tippecanoe-decode: decode.o vector_tile.pb.o projection.o mvt.o
 	$(CXX) $(PG) $(LIBS) -O3 -g -Wall $(CXXFLAGS) -o $@ $^ $(LDFLAGS) -lm -lz -lprotobuf-lite -lsqlite3
 
-tile-join: tile-join.o vector_tile.pb.o projection.o pool.o mbtiles.o protobuf.o
+tile-join: tile-join.o vector_tile.pb.o projection.o pool.o mbtiles.o mvt.o
 	$(CXX) $(PG) $(LIBS) -O3 -g -Wall $(CXXFLAGS) -o $@ $^ $(LDFLAGS) -lm -lz -lprotobuf-lite -lsqlite3
 
 libjsonpull.a: jsonpull.o
diff --git a/decode.cc b/decode.cc
index d1f76ab..92f9069 100644
--- a/decode.cc
+++ b/decode.cc
@@ -11,7 +11,7 @@
 #include <sys/mman.h>
 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
 #include <google/protobuf/io/coded_stream.h>
-#include "protobuf.hh"
+#include "mvt.hh"
 #include "vector_tile.pb.h"
 #include "tile.h"
 
@@ -47,9 +47,9 @@ struct draw {
 
 void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 	int within = 0;
-	pb_tile tile;
+	mvt_tile tile;
 
-	if (!pb_decode(message, tile)) {
+	if (!mvt_decode(message, tile)) {
 		fprintf(stderr, "Couldn't parse tile %d/%u/%u\n", z, x, y);
 		exit(EXIT_FAILURE);
 	}
@@ -63,7 +63,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 	printf(", \"features\": [\n");
 
 	for (int l = 0; l < tile.layers.size(); l++) {
-		pb_layer &layer = tile.layers[l];
+		mvt_layer &layer = tile.layers[l];
 		int extent = layer.extent;
 
 		if (describe) {
@@ -81,7 +81,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 		}
 
 		for (int f = 0; f < layer.features.size(); f++) {
-			pb_feature &feat = layer.features[f];
+			mvt_feature &feat = layer.features[f];
 
 			if (within) {
 				printf(",\n");
@@ -106,16 +106,16 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 				}
 
 				const char *key = layer.keys[feat.tags[t]].c_str();
-				pb_value const &val = layer.values[feat.tags[t + 1]];
+				mvt_value const &val = layer.values[feat.tags[t + 1]];
 
-				if (val.type == pb_string) {
+				if (val.type == mvt_string) {
 					printq(key);
 					printf(": ");
 					printq(val.string_value.c_str());
-				} else if (val.type == pb_int) {
+				} else if (val.type == mvt_int) {
 					printq(key);
 					printf(": %lld", (long long) val.numeric_value.int_value);
-				} else if (val.type == pb_double) {
+				} else if (val.type == mvt_double) {
 					printq(key);
 					double v = val.numeric_value.double_value;
 					if (v == (long long) v) {
@@ -123,7 +123,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 					} else {
 						printf(": %g", v);
 					}
-				} else if (val.type == pb_float) {
+				} else if (val.type == mvt_float) {
 					printq(key);
 					double v = val.numeric_value.float_value;
 					if (v == (long long) v) {
@@ -131,13 +131,13 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe) {
 					} else {
 						printf(": %g", v);
 					}
-				} else if (val.type == pb_sint) {
+				} else if (val.type == mvt_sint) {
 					printq(key);
 					printf(": %lld", (long long) val.numeric_value.sint_value);
-				} else if (val.type == pb_uint) {
+				} else if (val.type == mvt_uint) {
 					printq(key);
 					printf(": %lld", (long long) val.numeric_value.uint_value);
-				} else if (val.type == pb_bool) {
+				} else if (val.type == mvt_bool) {
 					printq(key);
 					printf(": %s", val.numeric_value.bool_value ? "true" : "false");
 				}
diff --git a/protobuf.cc b/mvt.cc
similarity index 87%
rename from protobuf.cc
rename to mvt.cc
index 5a89452..426eebb 100644
--- a/protobuf.cc
+++ b/mvt.cc
@@ -4,7 +4,7 @@
 #include <zlib.h>
 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
 #include <google/protobuf/io/coded_stream.h>
-#include "protobuf.hh"
+#include "mvt.hh"
 #include "vector_tile.pb.h"
 
 // https://github.com/mapbox/mapnik-vector-tile/blob/master/src/vector_tile_compression.hpp
@@ -75,7 +75,7 @@ int dezig(unsigned n) {
 	return (n >> 1) ^ (-(n & 1));
 }
 
-bool pb_decode(std::string &message, pb_tile &out) {
+bool mvt_decode(std::string &message, mvt_tile &out) {
 	GOOGLE_PROTOBUF_VERIFY_VERSION;
 
 	// https://github.com/mapbox/mapnik-vector-tile/blob/master/examples/c%2B%2B/tileinfo.cpp
@@ -97,7 +97,7 @@ bool pb_decode(std::string &message, pb_tile &out) {
 
 	for (size_t l = 0; l < tile.layers_size(); l++) {
 		mapnik::vector::tile_layer layer = tile.layers(l);
-		pb_layer pbl;
+		mvt_layer pbl;
 		pbl.extent = layer.extent();
 		pbl.name = layer.name();
 
@@ -107,28 +107,28 @@ bool pb_decode(std::string &message, pb_tile &out) {
 
 		for (size_t i = 0; i < layer.values_size(); i++) {
 			mapnik::vector::tile_value const &val = layer.values(i);
-			pb_value pbv;
+			mvt_value pbv;
 
 			if (val.has_string_value()) {
-				pbv.type = pb_string;
+				pbv.type = mvt_string;
 				pbv.string_value = val.string_value();
 			} else if (val.has_float_value()) {
-				pbv.type = pb_float;
+				pbv.type = mvt_float;
 				pbv.numeric_value.float_value = val.float_value();
 			} else if (val.has_double_value()) {
-				pbv.type = pb_double;
+				pbv.type = mvt_double;
 				pbv.numeric_value.double_value = val.double_value();
 			} else if (val.has_int_value()) {
-				pbv.type = pb_int;
+				pbv.type = mvt_int;
 				pbv.numeric_value.int_value = val.int_value();
 			} else if (val.has_uint_value()) {
-				pbv.type = pb_uint;
+				pbv.type = mvt_uint;
 				pbv.numeric_value.uint_value = val.uint_value();
 			} else if (val.has_sint_value()) {
-				pbv.type = pb_sint;
+				pbv.type = mvt_sint;
 				pbv.numeric_value.sint_value = val.sint_value();
 			} else if (val.has_bool_value()) {
-				pbv.type = pb_bool;
+				pbv.type = mvt_bool;
 				pbv.numeric_value.bool_value = val.bool_value();
 			}
 
@@ -137,7 +137,7 @@ bool pb_decode(std::string &message, pb_tile &out) {
 
 		for (size_t f = 0; f < layer.features_size(); f++) {
 			mapnik::vector::tile_feature feat = layer.features(f);
-			pb_feature pbf;
+			mvt_feature pbf;
 			pbf.type = feat.type();
 
 			for (size_t i = 0; i < feat.tags_size(); i++) {
@@ -150,16 +150,16 @@ bool pb_decode(std::string &message, pb_tile &out) {
 				uint32_t op = geom & 7;
 				uint32_t count = geom >> 3;
 
-				if (op == pb_moveto || op == pb_lineto) {
+				if (op == mvt_moveto || op == mvt_lineto) {
 					for (size_t k = 0; k < count; k++) {
 						px += dezig(feat.geometry(g + 1));
 						py += dezig(feat.geometry(g + 2));
 						g += 2;
 
-						pbf.geometry.push_back(pb_geometry(op, px, py));
+						pbf.geometry.push_back(mvt_geometry(op, px, py));
 					}
 				} else {
-					pbf.geometry.push_back(pb_geometry(op, 0, 0));
+					pbf.geometry.push_back(mvt_geometry(op, 0, 0));
 				}
 			}
 
@@ -172,7 +172,7 @@ bool pb_decode(std::string &message, pb_tile &out) {
 	return true;
 }
 
-std::string pb_encode(pb_tile &in) {
+std::string mvt_encode(mvt_tile &in) {
 	GOOGLE_PROTOBUF_VERIFY_VERSION;
 
 	mapnik::vector::tile tile;
@@ -189,21 +189,21 @@ std::string pb_encode(pb_tile &in) {
 		}
 		for (size_t v = 0; v < in.layers[i].values.size(); v++) {
 			mapnik::vector::tile_value *tv = layer->add_values();
-			pb_value &pbv = in.layers[i].values[v];
+			mvt_value &pbv = in.layers[i].values[v];
 
-			if (pbv.type == pb_string) {
+			if (pbv.type == mvt_string) {
 				tv->set_string_value(pbv.string_value);
-			} else if (pbv.type == pb_float) {
+			} else if (pbv.type == mvt_float) {
 				tv->set_float_value(pbv.numeric_value.float_value);
-			} else if (pbv.type == pb_double) {
+			} else if (pbv.type == mvt_double) {
 				tv->set_double_value(pbv.numeric_value.double_value);
-			} else if (pbv.type == pb_int) {
+			} else if (pbv.type == mvt_int) {
 				tv->set_int_value(pbv.numeric_value.int_value);
-			} else if (pbv.type == pb_uint) {
+			} else if (pbv.type == mvt_uint) {
 				tv->set_uint_value(pbv.numeric_value.uint_value);
-			} else if (pbv.type == pb_sint) {
+			} else if (pbv.type == mvt_sint) {
 				tv->set_sint_value(pbv.numeric_value.sint_value);
-			} else if (pbv.type == pb_bool) {
+			} else if (pbv.type == mvt_bool) {
 				tv->set_bool_value(pbv.numeric_value.bool_value);
 			}
 		}
@@ -216,11 +216,11 @@ std::string pb_encode(pb_tile &in) {
 			}
 
 			int type = in.layers[i].features[f].type;
-			if (type == pb_point) {
+			if (type == mvt_point) {
 				feature->set_type(mapnik::vector::tile::Point);
-			} else if (type == pb_linestring) {
+			} else if (type == mvt_linestring) {
 				feature->set_type(mapnik::vector::tile::LineString);
-			} else if (type == pb_polygon) {
+			} else if (type == mvt_polygon) {
 				feature->set_type(mapnik::vector::tile::Polygon);
 			} else {
 				fprintf(stderr, "Corrupt geometry type\n");
@@ -236,7 +236,7 @@ std::string pb_encode(pb_tile &in) {
 			int cmd = -1;
 			int length = 0;
 
-			std::vector<pb_geometry> &geom = in.layers[i].features[f].geometry;
+			std::vector<mvt_geometry> &geom = in.layers[i].features[f].geometry;
 
 			for (size_t g = 0; g < geom.size(); g++) {
 				int op = geom[g].op;
@@ -252,7 +252,7 @@ std::string pb_encode(pb_tile &in) {
 					feature->add_geometry(0);
 				}
 
-				if (op == pb_moveto || op == pb_lineto) {
+				if (op == mvt_moveto || op == mvt_lineto) {
 					long long wwx = geom[g].x;
 					long long wwy = geom[g].y;
 
@@ -267,7 +267,7 @@ std::string pb_encode(pb_tile &in) {
 					px = wwx;
 					py = wwy;
 					length++;
-				} else if (op == pb_closepath) {
+				} else if (op == mvt_closepath) {
 					length++;
 				} else {
 					fprintf(stderr, "\nInternal error: corrupted geometry\n");
diff --git a/mvt.hh b/mvt.hh
new file mode 100644
index 0000000..a92fa5c
--- /dev/null
+++ b/mvt.hh
@@ -0,0 +1,63 @@
+bool is_compressed(std::string const &data);
+int decompress(std::string const &input, std::string &output);
+int compress(std::string const &input, std::string &output);
+int dezig(unsigned n);
+
+enum mvt_geometry_type {
+	mvt_point = 1, mvt_linestring = 2, mvt_polygon = 3
+};
+
+enum mvt_operation {
+	mvt_moveto = 1, mvt_lineto = 2, mvt_closepath = 7
+};
+
+enum mvt_value_type {
+	mvt_string, mvt_float, mvt_double, mvt_int, mvt_uint, mvt_sint, mvt_bool
+};
+
+struct mvt_value {
+	mvt_value_type type;
+	std::string string_value;
+	union {
+		float float_value;
+		double double_value;
+		long long int_value;
+		unsigned long long uint_value;
+		long long sint_value;
+		bool bool_value;
+	} numeric_value;
+};
+
+struct mvt_geometry {
+	int /* mvt_operation */ op;
+	long long x;
+	long long y;
+
+	mvt_geometry(int op, long long x, long long y) {
+		this->op = op;
+		this->x = x;
+		this->y = y;
+	}
+};
+
+struct mvt_feature {
+	std::vector<unsigned> tags;
+	int /* mvt_geometry_type */ type;
+	std::vector<mvt_geometry> geometry;
+};
+
+struct mvt_layer {
+	int version;
+	std::string name;
+	std::vector<mvt_feature> features;
+	std::vector<std::string> keys;
+	std::vector<mvt_value> values;
+	int extent;
+};
+
+struct mvt_tile {
+	std::vector<mvt_layer> layers;
+};
+
+bool mvt_decode(std::string &message, mvt_tile &out);
+std::string mvt_encode(mvt_tile &in);
diff --git a/protobuf.hh b/protobuf.hh
deleted file mode 100644
index b378af7..0000000
--- a/protobuf.hh
+++ /dev/null
@@ -1,63 +0,0 @@
-bool is_compressed(std::string const &data);
-int decompress(std::string const &input, std::string &output);
-int compress(std::string const &input, std::string &output);
-int dezig(unsigned n);
-
-enum pb_geometry_type {
-	pb_point = 1, pb_linestring = 2, pb_polygon = 3
-};
-
-enum pb_operation {
-	pb_moveto = 1, pb_lineto = 2, pb_closepath = 7
-};
-
-enum pb_value_type {
-	pb_string, pb_float, pb_double, pb_int, pb_uint, pb_sint, pb_bool
-};
-
-struct pb_value {
-	pb_value_type type;
-	std::string string_value;
-	union {
-		float float_value;
-		double double_value;
-		long long int_value;
-		unsigned long long uint_value;
-		long long sint_value;
-		bool bool_value;
-	} numeric_value;
-};
-
-struct pb_geometry {
-	int /* pb_operation */ op;
-	long long x;
-	long long y;
-
-	pb_geometry(int op, long long x, long long y) {
-		this->op = op;
-		this->x = x;
-		this->y = y;
-	}
-};
-
-struct pb_feature {
-	std::vector<unsigned> tags;
-	int /* pb_geometry_type */ type;
-	std::vector<pb_geometry> geometry;
-};
-
-struct pb_layer {
-	int version;
-	std::string name;
-	std::vector<pb_feature> features;
-	std::vector<std::string> keys;
-	std::vector<pb_value> values;
-	int extent;
-};
-
-struct pb_tile {
-	std::vector<pb_layer> layers;
-};
-
-bool pb_decode(std::string &message, pb_tile &out);
-std::string pb_encode(pb_tile &in);
diff --git a/tile-join.cc b/tile-join.cc
index 32719d6..1afe629 100644
--- a/tile-join.cc
+++ b/tile-join.cc
@@ -8,7 +8,7 @@
 #include <map>
 #include <zlib.h>
 #include <math.h>
-#include "protobuf.hh"
+#include "mvt.hh"
 #include "vector_tile.pb.h"
 #include "tile.h"
 
diff --git a/tile.cc b/tile.cc
index b581c5a..7202e65 100644
--- a/tile.cc
+++ b/tile.cc
@@ -18,7 +18,7 @@
 #include <sqlite3.h>
 #include <pthread.h>
 #include <errno.h>
-#include "protobuf.hh"
+#include "mvt.hh"
 #include "vector_tile.pb.h"
 #include "geometry.hh"
 
@@ -38,11 +38,11 @@ extern "C" {
 pthread_mutex_t db_lock = PTHREAD_MUTEX_INITIALIZER;
 pthread_mutex_t var_lock = PTHREAD_MUTEX_INITIALIZER;
 
-std::vector<pb_geometry> to_feature(drawvec &geom) {
-	std::vector<pb_geometry> out;
+std::vector<mvt_geometry> to_feature(drawvec &geom) {
+	std::vector<mvt_geometry> out;
 
 	for (size_t i = 0; i < geom.size(); i++) {
-		out.push_back(pb_geometry(geom[i].op, geom[i].x, geom[i].y));
+		out.push_back(mvt_geometry(geom[i].op, geom[i].x, geom[i].y));
 	}
 
 	return out;
@@ -203,8 +203,8 @@ static int is_integer(const char *s, long long *v) {
 	return 1;
 }
 
-pb_tile create_tile(char **layernames, int line_detail, std::vector<std::vector<coalesce> > &features, long long *count, struct pool **keys, struct pool **values, int nlayers) {
-	pb_tile tile;
+mvt_tile create_tile(char **layernames, int line_detail, std::vector<std::vector<coalesce> > &features, long long *count, struct pool **keys, struct pool **values, int nlayers) {
+	mvt_tile tile;
 
 	int i;
 	for (i = 0; i < nlayers; i++) {
@@ -212,7 +212,7 @@ pb_tile create_tile(char **layernames, int line_detail, std::vector<std::vector<
 			continue;
 		}
 
-		pb_layer layer;
+		mvt_layer layer;
 
 		layer.name = layernames[i];
 		layer.version = 1;
@@ -223,7 +223,7 @@ pb_tile create_tile(char **layernames, int line_detail, std::vector<std::vector<
 				features[i][x].geom = remove_noop(features[i][x].geom, features[i][x].type, 0);
 			}
 
-			pb_feature pbf;
+			mvt_feature pbf;
 			pbf.type = features[i][x].type;
 
 			pbf.geometry = to_feature(features[i][x].geom);
@@ -241,27 +241,27 @@ pb_tile create_tile(char **layernames, int line_detail, std::vector<std::vector<
 			layer.keys.push_back(std::string(pv->s, strlen(pv->s)));
 		}
 		for (pv = values[i]->head; pv != NULL; pv = pv->next) {
-			pb_value tv;
+			mvt_value tv;
 
 			if (pv->type == VT_NUMBER) {
 				long long v;
 				if (is_integer(pv->s, &v)) {
 					if (v >= 0) {
-						tv.type = pb_int;
+						tv.type = mvt_int;
 						tv.numeric_value.int_value = v;
 					} else {
-						tv.type = pb_sint;
+						tv.type = mvt_sint;
 						tv.numeric_value.sint_value = v;
 					}
 				} else {
-					tv.type = pb_double;
+					tv.type = mvt_double;
 					tv.numeric_value.double_value = atof(pv->s);
 				}
 			} else if (pv->type == VT_BOOLEAN) {
-				tv.type = pb_bool;
+				tv.type = mvt_bool;
 				tv.numeric_value.bool_value = (pv->s[0] == 't');
 			} else {
-				tv.type = pb_string;
+				tv.type = mvt_string;
 				tv.string_value = pv->s;
 			}
 
@@ -944,7 +944,7 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
 				return -1;
 			}
 
-			pb_tile tile = create_tile(layernames, line_detail, features, &count, keys, values, nlayers);
+			mvt_tile tile = create_tile(layernames, line_detail, features, &count, keys, values, nlayers);
 
 			int i;
 			for (i = 0; i < nlayers; i++) {
@@ -952,7 +952,7 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
 				pool_free(&values1[i]);
 			}
 
-			std::string compressed = pb_encode(tile);
+			std::string compressed = mvt_encode(tile);
 
 			if (compressed.size() > 500000 && !prevent[P_KILOBYTE_LIMIT]) {
 				if (!quiet) {