--- a/browser/components/shell/nsKDEShellService.cpp
+++ b/browser/components/shell/nsKDEShellService.cpp
@@ -101,3 +101,11 @@
     return NS_ERROR_NOT_IMPLEMENTED;
 }
 
+
+NS_IMETHODIMP
+nsKDEShellService::IsDefaultForScheme(nsTSubstring<char> const& aScheme, 
+                                             bool* aIsDefaultBrowser)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+