diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Background.js b/web/gui/src/main/webapp/app/view/topo2/topo2Background.js
index 525cd07..8f2e3e4 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Background.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Background.js
@@ -79,7 +79,7 @@
                             t2sls.hide();
                             t2ms.show();
 
-                            t2ms.setUpMap(data.bgId, data.bgFilePath, scale)
+                            t2ms.setUpMap(data.bgId, data.bgFilePath)
                             .then(function (proj) {
                                 t2mcs.projection(proj);
                                 $log.debug('** We installed the projection:', proj);
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Map.js b/web/gui/src/main/webapp/app/view/topo2/topo2Map.js
index 0f559fa..0c8f73e 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Map.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Map.js
@@ -52,7 +52,7 @@
 
         promise = loadMap(this.node(), mapFilePath, mapId, {
             countryFilters: cfilter,
-            adjustScale: mapScale,
+            adjustScale: mapScale || 1,
             shading: ''
         });
 
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Zoom.js b/web/gui/src/main/webapp/app/view/topo2/topo2Zoom.js
index d52154c..c37c92b 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Zoom.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Zoom.js
@@ -72,8 +72,8 @@
         return zoomer.scale();
     }
 
-    function panAndZoom(translate, scale) {
-        zoomer.panZoom(translate, scale, 1000);
+    function panAndZoom(translate, scale, transition) {
+        zoomer.panZoom(translate, scale, transition);
     }
 
     angular.module('ovTopo2')