diff --git a/README.md b/README.md
index d8f197a..1f3e631 100644
--- a/README.md
+++ b/README.md
@@ -156,7 +156,7 @@ resolution is obtained than by using a smaller _maxzoom_ or _detail_.
  * `-X` or `--exclude-all`: Exclude all properties and encode only geometries
  * `-T`_attribute_`:`_type_ or `--attribute-type=`_attribute_`:`_type_: Coerce the named feature _attribute_ to be of the specified _type_.
    The _type_ may be `string`, `float`, `int`, or `bool`.
-   If the type is `bool`, then original attributes of `0`, `false`, `null`, or the empty string become `false`, and otherwise become `true`.
+   If the type is `bool`, then original attributes of `0` (or, if numeric, `0.0`, etc.), `false`, `null`, or the empty string become `false`, and otherwise become `true`.
    If the type is `float` or `int` and the original attribute was non-numeric, it becomes `0`.
    If the type is `int` and the original attribute was floating-point, it is rounded to the nearest integer.
 
diff --git a/man/tippecanoe.1 b/man/tippecanoe.1
index b3c0b3e..7bea721 100644
--- a/man/tippecanoe.1
+++ b/man/tippecanoe.1
@@ -173,7 +173,7 @@ resolution is obtained than by using a smaller \fImaxzoom\fP or \fIdetail\fP\&.
 .IP \(bu 2
 \fB\fC\-T\fR\fIattribute\fP\fB\fC:\fR\fItype\fP or \fB\fC\-\-attribute\-type=\fR\fIattribute\fP\fB\fC:\fR\fItype\fP: Coerce the named feature \fIattribute\fP to be of the specified \fItype\fP\&.
 The \fItype\fP may be \fB\fCstring\fR, \fB\fCfloat\fR, \fB\fCint\fR, or \fB\fCbool\fR\&.
-If the type is \fB\fCbool\fR, then original attributes of \fB\fC0\fR, \fB\fCfalse\fR, \fB\fCnull\fR, or the empty string become \fB\fCfalse\fR, and otherwise become \fB\fCtrue\fR\&.
+If the type is \fB\fCbool\fR, then original attributes of \fB\fC0\fR (or, if numeric, \fB\fC0.0\fR, etc.), \fB\fCfalse\fR, \fB\fCnull\fR, or the empty string become \fB\fCfalse\fR, and otherwise become \fB\fCtrue\fR\&.
 If the type is \fB\fCfloat\fR or \fB\fCint\fR and the original attribute was non\-numeric, it becomes \fB\fC0\fR\&.
 If the type is \fB\fCint\fR and the original attribute was floating\-point, it is rounded to the nearest integer.
 .RE
diff --git a/serial.cpp b/serial.cpp
index 62ca440..b0015d6 100644
--- a/serial.cpp
+++ b/serial.cpp
@@ -622,7 +622,7 @@ void coerce_value(std::string const &key, int &vt, std::string &val, std::map<st
 				}
 			}
 		} else if (a->second == mvt_bool) {
-			if (val == "false" || val == "0" || val == "null" || val.size() == 0) {
+			if (val == "false" || val == "0" || val == "null" || val.size() == 0 || (vt == mvt_double && atof(val.c_str()) == 0)) {
 				vt = mvt_bool;
 				val = "false";
 			} else {
diff --git a/tests/attribute-type/in.json b/tests/attribute-type/in.json
index 9744fe3..da36ce2 100644
--- a/tests/attribute-type/in.json
+++ b/tests/attribute-type/in.json
@@ -7,7 +7,7 @@
 { "type": "Feature", "properties": { "booltype": "false", "expect": false }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
 { "type": "Feature", "properties": { "booltype": true, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
 { "type": "Feature", "properties": { "booltype": 1, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
-{ "type": "Feature", "properties": { "booltype": 0.0, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
+{ "type": "Feature", "properties": { "booltype": 0.0, "expect": false }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
 { "type": "Feature", "properties": { "booltype": "yes", "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
 { "type": "Feature", "properties": { "booltype": [ 2, 3 ], "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
 { "type": "Feature", "properties": { "stringtype": null, "expect": "null" }, "geometry": { "type": "Point", "coordinates": [ 0,0 ] } }
diff --git a/tests/attribute-type/out/-z0_-Tinttype@int_-Tfloattype@float_-Tbooltype@bool_-Tstringtype@string.json b/tests/attribute-type/out/-z0_-Tinttype@int_-Tfloattype@float_-Tbooltype@bool_-Tstringtype@string.json
index b69c465..1b60e70 100644
--- a/tests/attribute-type/out/-z0_-Tinttype@int_-Tfloattype@float_-Tbooltype@bool_-Tstringtype@string.json
+++ b/tests/attribute-type/out/-z0_-Tinttype@int_-Tfloattype@float_-Tbooltype@bool_-Tstringtype@string.json
@@ -30,7 +30,7 @@
 ,
 { "type": "Feature", "properties": { "booltype": true, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0.000000, 0.000000 ] } }
 ,
-{ "type": "Feature", "properties": { "booltype": true, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0.000000, 0.000000 ] } }
+{ "type": "Feature", "properties": { "booltype": false, "expect": false }, "geometry": { "type": "Point", "coordinates": [ 0.000000, 0.000000 ] } }
 ,
 { "type": "Feature", "properties": { "booltype": true, "expect": true }, "geometry": { "type": "Point", "coordinates": [ 0.000000, 0.000000 ] } }
 ,