diff --git a/plugins/xpcom/ModuleOOPHM.cpp b/plugins/xpcom/ModuleOOPHM.cpp
index 4b6c98b..89aabe6 100644
--- a/plugins/xpcom/ModuleOOPHM.cpp
+++ b/plugins/xpcom/ModuleOOPHM.cpp
@@ -26,7 +26,7 @@
 #include "nsServiceManagerUtils.h"
 #include "nsXPCOMCID.h"
 
-#ifdef BROWSER_FF3
+#ifdef GECKO_19
 #include "nsIClassInfoImpl.h" // 1.9 only
 #endif