diff --git a/htdocs/map-leaflet.js b/htdocs/map-leaflet.js
index 479c50fe..fd39d310 100644
--- a/htdocs/map-leaflet.js
+++ b/htdocs/map-leaflet.js
@@ -3,7 +3,6 @@ var callsign_url = null;
 var vessel_url   = null;
 var flight_url   = null;
 
-var baseLayer;
 var mapSources = [
     {
         name: 'OpenStreetMap',