diff --git a/osm-garmin/app/build-gmap.sh b/osm-garmin/app/build-gmap.sh
index 607a04e..53618a0 100755
--- a/osm-garmin/app/build-gmap.sh
+++ b/osm-garmin/app/build-gmap.sh
@@ -15,7 +15,8 @@ function build_gmap() {
 
     bounds_dir_md5="$(get_md5_dir "$bounds_dir")"
     map_md5="$(get_md5 "$maps_dir/$region_shortname.osm.pbf")"
-    version="$(echo "$bounds_dir_md5|$map_md5" | md5sum | cut -d' ' -f1)"
+    style_md5="$(get_md5 "$style_dir/$style.TYP")"
+    version="$(echo "$bounds_dir_md5|$map_md5|$style_md5" | md5sum | cut -d' ' -f1)"
 
     generated_map_dir="$out_dir/$region_shortname/"
     version_path="$generated_map_dir/version.txt"