diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index d7b0857bf060..822eba5e8f15 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -11127,13 +11127,6 @@ nsNavigator::JavaEnabled(PRBool *aReturn)
   return NS_OK;
 }
 
-NS_IMETHODIMP
-nsNavigator::TaintEnabled(PRBool *aReturn)
-{
-  *aReturn = PR_FALSE;
-  return NS_OK;
-}
-
 void
 nsNavigator::LoadingNewDocument()
 {
diff --git a/dom/interfaces/base/nsIDOMNavigator.idl b/dom/interfaces/base/nsIDOMNavigator.idl
index 287169146965..5ce84e870335 100644
--- a/dom/interfaces/base/nsIDOMNavigator.idl
+++ b/dom/interfaces/base/nsIDOMNavigator.idl
@@ -39,7 +39,7 @@
 
 #include "domstubs.idl"
 
-[scriptable, uuid(d7758ece-f088-4701-9ae4-1450192dca38)]
+[scriptable, uuid(5dd9f1f5-3347-4945-a350-4eedeb97d24c)]
 interface nsIDOMNavigator : nsISupports
 {
   readonly attribute DOMString           appCodeName;
@@ -60,6 +60,5 @@ interface nsIDOMNavigator : nsISupports
   readonly attribute DOMString           buildID;
 
   boolean                   javaEnabled();
-  boolean                   taintEnabled();
 };