diff --git a/mozilla/widget/src/beos/nsBidiKeyboard.cpp b/mozilla/widget/src/beos/nsBidiKeyboard.cpp
index c04a568d0e1..30720d5c0a5 100644
--- a/mozilla/widget/src/beos/nsBidiKeyboard.cpp
+++ b/mozilla/widget/src/beos/nsBidiKeyboard.cpp
@@ -24,7 +24,7 @@
 
 static NS_DEFINE_IID(kIBidiKeyboardIID, NS_IBIDIKEYBOARD_IID);
 
-NS_IMPL_ISUPPORTS(nsBidiKeyboard, NS_IBIDIKEYBOARD_IID)
+NS_IMPL_ISUPPORTS(nsBidiKeyboard, kIBidiKeyboardIID)
 nsBidiKeyboard::nsBidiKeyboard() : nsIBidiKeyboard()
 {
   NS_INIT_REFCNT();