diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index de392ea79ef8..e8f5dc1f3130 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -10990,9 +10990,11 @@ NS_IMETHODIMP nsNavigator::GetGeolocation(nsIDOMGeoGeolocation **_retval)
   if (!mGeolocation)
     return NS_ERROR_FAILURE;
   
-  if (NS_FAILED(mGeolocation->Init(contentDOMWindow)))
+  if (NS_FAILED(mGeolocation->Init(contentDOMWindow))) {
+    mGeolocation = nsnull;
     return NS_ERROR_FAILURE;
-  
+  }
+
   NS_ADDREF(*_retval = mGeolocation);    
   return NS_OK; 
 }