diff --git a/lib/ace/edit_session/folding.js b/lib/ace/edit_session/folding.js
index c6292a3f..310a9856 100644
--- a/lib/ace/edit_session/folding.js
+++ b/lib/ace/edit_session/folding.js
@@ -729,7 +729,7 @@ function Folding() {
         } else {
             if (addSubfolds)
                 this.foldAll(row + 1, this.getLength());
-            e.target.className += " invalid"
+            (e.target || e.srcElement).className += " invalid"
         }
     };
     
diff --git a/lib/ace/mouse/default_gutter_handler.js b/lib/ace/mouse/default_gutter_handler.js
index 21c792a1..e7e005bd 100644
--- a/lib/ace/mouse/default_gutter_handler.js
+++ b/lib/ace/mouse/default_gutter_handler.js
@@ -44,7 +44,7 @@ function GutterHandler(mouseHandler) {
     var editor = mouseHandler.editor;
 
     mouseHandler.editor.setDefaultHandler("guttermousedown", function(e) {
-        var target = e.domEvent.target;
+        var target = e.domEvent.target || e.domEvent.srcElement;
         if (target.className.indexOf("ace_gutter-cell") == -1)
             return;