diff --git a/examples/edit.js b/examples/edit.js
index 74551384c9..5d5d642f47 100644
--- a/examples/edit.js
+++ b/examples/edit.js
@@ -392,6 +392,11 @@ var toolBar = (function() {
             url,
             file;
 
+        if (!event.isLeftButton) {
+            // if another mouse button than left is pressed ignore it
+            return false;
+        }
+
         clickedOverlay = Overlays.getOverlayAtPoint({
             x: event.x,
             y: event.y
diff --git a/examples/libraries/entitySelectionTool.js b/examples/libraries/entitySelectionTool.js
index 61aa5b0394..6edbe6844b 100644
--- a/examples/libraries/entitySelectionTool.js
+++ b/examples/libraries/entitySelectionTool.js
@@ -2340,6 +2340,11 @@ SelectionDisplay = (function () {
 
     that.mousePressEvent = function(event) {
 
+        if (!event.isLeftButton) {
+            // if another mouse button than left is pressed ignore it
+            return false;
+        }
+
         var somethingClicked = false;
         var pickRay = Camera.computePickRay(event.x, event.y);