diff --git a/frontend-js/src/main/js/gui/OverviewDialog.js b/frontend-js/src/main/js/gui/OverviewDialog.js
index 3700babb09d6b2c2fe93a2e31815c0a39b9fdcb0..ae3a5c4023cab0f5cca9978a6c536001c853fb5f 100644
--- a/frontend-js/src/main/js/gui/OverviewDialog.js
+++ b/frontend-js/src/main/js/gui/OverviewDialog.js
@@ -179,11 +179,11 @@ OverviewDialog.prototype.openLink = function (link) {
   var map = self.getMap();
   if (link.type === "OverviewModelLink") {
     logger.debug("Opening model from overview. ModelId: " + link.modelLinkId);
-    logger.debug("link coordinates [" + link.idObject + "]: ", link.modelPoint);
+    logger.debug("link coordinates [" + link.idObject + "]: " + link.modelPoint);
 
     map.openSubmap(link.modelLinkId);
     var submap = map.getSubmapById(link.modelLinkId);
-    logger.debug("zoom [" + link.idObject + "]: ", link.zoomLevel + submap.getMinZoom());
+    logger.debug("zoom [" + link.idObject + "]: " + link.zoomLevel + submap.getMinZoom());
     submap.setCenter(new Point(link.modelPoint));
     submap.setZoom(link.zoomLevel + submap.getMinZoom());