2 files changed, 2 insertions, 2 deletions
diff --git a/modules/overlay/overlay-child.js b/modules/overlay/overlay-child.js
index 1445b32b7..018445517 100644
--- a/modules/overlay/overlay-child.js
+++ b/modules/overlay/overlay-child.js
@@ -23,7 +23,7 @@ Drupal.behaviors.overlayChild = {
 
     // If we cannot reach the parent window, then we have nothing else to do
     // here.
-    if (!$.isObject(parent.Drupal) || !$.isObject(parent.Drupal.overlay)) {
+    if (!$.isPlainObject(parent.Drupal) || !$.isPlainObject(parent.Drupal.overlay)) {
       return;
     }
 
diff --git a/modules/overlay/overlay-parent.js b/modules/overlay/overlay-parent.js
index 78efe9088..dd064faa3 100644
--- a/modules/overlay/overlay-parent.js
+++ b/modules/overlay/overlay-parent.js
@@ -598,7 +598,7 @@ Drupal.overlay.innerResize = function (height) {
   }
 
   // When no height is given try to get height when iframe content is loaded.
-  if (!height && $.isObject(self.$iframeBody)) {
+  if (!height && self.$iframeBody) {
     height = self.$iframeBody.outerHeight() + 25;
   }