diff --git a/widget/public/nsIMenu.h b/widget/public/nsIMenu.h
index 5d535a7b1ba..b10826ee78f 100644
--- a/widget/public/nsIMenu.h
+++ b/widget/public/nsIMenu.h
@@ -53,7 +53,7 @@ class nsIMenu : public nsISupports {
     * Creates the Menu
     *
     */
-    NS_IMETHOD Create ( nsISupports * aParent, const nsString &aLabel, const nsString &aAccessKey, 
+    NS_IMETHOD Create ( nsISupports * aParent, const nsAReadableString &aLabel, const nsAReadableString &aAccessKey, 
                           nsIChangeManager* aManager, nsIWebShell* aShell, nsIDOMNode* aNode ) = 0;
 
    /**
@@ -72,7 +72,7 @@ class nsIMenu : public nsISupports {
     * Set the Menu label
     *
     */
-    NS_IMETHOD SetLabel(const nsString &aText) = 0;
+    NS_IMETHOD SetLabel(const nsAReadableString &aText) = 0;
 
 	/**
     * Get the Menu Access Key
@@ -84,7 +84,7 @@ class nsIMenu : public nsISupports {
     * Set the Menu Access Key
     *
     */
-	NS_IMETHOD SetAccessKey(const nsString &aText) = 0;
+	NS_IMETHOD SetAccessKey(const nsAReadableString &aText) = 0;
 
 	/**
     * Set the Menu enabled state
diff --git a/widget/public/nsIMenuListener.h b/widget/public/nsIMenuListener.h
index c4c78e62852..719c7110f02 100644
--- a/widget/public/nsIMenuListener.h
+++ b/widget/public/nsIMenuListener.h
@@ -80,7 +80,7 @@ class nsIMenuListener : public nsISupports {
     virtual nsEventStatus MenuDestruct(const nsMenuEvent & aMenuEvent) = 0;
     
     virtual nsEventStatus CheckRebuild(PRBool & aMenuEvent) = 0;
-    virtual nsEventStatus SetRebuild(PRBool & aMenuEvent) = 0;
+    virtual nsEventStatus SetRebuild(PRBool aMenuEvent) = 0;
 };
 
 #endif // nsIMenuListener_h__