diff --git a/xpfe/components/search/src/nsInternetSearchService.cpp b/xpfe/components/search/src/nsInternetSearchService.cpp
index 8712760d695..a40292209a8 100755
--- a/xpfe/components/search/src/nsInternetSearchService.cpp
+++ b/xpfe/components/search/src/nsInternetSearchService.cpp
@@ -1463,7 +1463,7 @@ InternetSearchDataSource::filterSite(nsIRDFResource *aResource)
 		aRes = do_QueryInterface(isupports);
 		if (!aRes)	return(NS_ERROR_UNEXPECTED);
 
-		if ((aRes == kNC_LastSearchRoot) || (isSearchURI(aRes)))
+		if ((aRes.get() == kNC_LastSearchRoot) || (isSearchURI(aRes)))
 		{
 			array->AppendElement(aRes);
 		}