diff --git a/mozilla/webshell/embed/ActiveX/guids.cpp b/mozilla/webshell/embed/ActiveX/guids.cpp
index 4d8036957a5..c515f4b485f 100644
--- a/mozilla/webshell/embed/ActiveX/guids.cpp
+++ b/mozilla/webshell/embed/ActiveX/guids.cpp
@@ -20,6 +20,7 @@
 
 // Class IDs
 NS_DEFINE_IID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
+NS_DEFINE_IID(kHTMLEditorCID, NS_HTMLEDITOR_CID);
 
 // Interface IDs
 NS_DEFINE_IID(kIBrowserWindowIID, NS_IBROWSER_WINDOW_IID);
diff --git a/mozilla/webshell/embed/ActiveX/guids.h b/mozilla/webshell/embed/ActiveX/guids.h
index ec6a052bb92..04ef6292bf6 100644
--- a/mozilla/webshell/embed/ActiveX/guids.h
+++ b/mozilla/webshell/embed/ActiveX/guids.h
@@ -23,6 +23,7 @@
 
 // Class IDs
 NS_EXTERN_IID(kEventQueueServiceCID);
+NS_EXTERN_IID(kHTMLEditorCID);
 
 // Interface IDs
 NS_EXTERN_IID(kIBrowserWindowIID);