diff --git a/koki/koryo.js b/koki/koryo.js
index 5a53cb0..e0928b2 100644
--- a/koki/koryo.js
+++ b/koki/koryo.js
@@ -11,7 +11,7 @@
 
     var gpsmarker = L.marker(mymap.getCenter()).addTo(mymap);
     gpsmarker.bindPopup("START").openPopup();
-    var geticon = L.icon({iconUrl:"yellow.png",iconAnchor:[41,41]});
+    var geticon = L.icon({iconUrl:"Yellow.png",iconAnchor:[41,41]});
 
     var nTrial = 10;
     var watchId = null;