diff --git a/tile.h b/tile.h
index 93cc604..42f9607 100644
--- a/tile.h
+++ b/tile.h
@@ -32,4 +32,4 @@ int traverse_zooms(int *geomfd, off_t *geom_size, char *metabase, char *stringpo
 extern unsigned initial_x, initial_y;
 extern int geometry_scale;
 
-#define MAX_ZOOM_INCREMENT 4
+#define MAX_ZOOM_INCREMENT 3