diff --git a/webshell/embed/ActiveX/WebShellContainer.cpp b/webshell/embed/ActiveX/WebShellContainer.cpp
index cb7eaeb67eb..fac24915c68 100644
--- a/webshell/embed/ActiveX/WebShellContainer.cpp
+++ b/webshell/embed/ActiveX/WebShellContainer.cpp
@@ -195,7 +195,7 @@ CWebShellContainer::SetTitle(const PRUnichar* aTitle)
 
 
 NS_IMETHODIMP
-CWebShellContainer::GetTitle(const PRUnichar** aResult)
+CWebShellContainer::GetTitle(PRUnichar** aResult)
 {
 	NG_TRACE_METHOD(CWebShellContainer::GetTitle);
 	*aResult = nsnull;
diff --git a/webshell/embed/ActiveX/WebShellContainer.h b/webshell/embed/ActiveX/WebShellContainer.h
index c5afffb70df..396af1e8500 100644
--- a/webshell/embed/ActiveX/WebShellContainer.h
+++ b/webshell/embed/ActiveX/WebShellContainer.h
@@ -67,7 +67,7 @@ public:
 	NS_IMETHOD SetChrome(PRUint32 aNewChromeMask);
 	NS_IMETHOD GetChrome(PRUint32& aChromeMaskResult);
 	NS_IMETHOD SetTitle(const PRUnichar* aTitle);
-	NS_IMETHOD GetTitle(const PRUnichar** aResult);
+    NS_IMETHOD GetTitle(PRUnichar** aResult) = 0;
 	NS_IMETHOD SetStatus(const PRUnichar* aStatus);
 	NS_IMETHOD GetStatus(const PRUnichar** aResult);
 	NS_IMETHOD SetDefaultStatus(const PRUnichar* aStatus);