diff --git a/koki/koeki.js b/koki/koeki.js
index b014c71..438b8e0 100644
--- a/koki/koeki.js
+++ b/koki/koeki.js
@@ -8,7 +8,7 @@
     var gpsmarker = L.marker(mymap.getCenter()).addTo(mymap);
     gpsmarker.bindPopup("START").openPopup();
 
-    let cafemarker = L.marker(mymap.([38.894097, 139.819253])).addTo(mymap);
+    let cafemarker = L.marker(mymap.latlng([38.894097, 139.819253])).addTo(mymap);
     var nTrial = 10;
     var watchId = null;