diff --git a/mailnews/base/build/nsMsgFactory.cpp b/mailnews/base/build/nsMsgFactory.cpp
index 2757aa4c7d0..0a019956e1c 100644
--- a/mailnews/base/build/nsMsgFactory.cpp
+++ b/mailnews/base/build/nsMsgFactory.cpp
@@ -99,7 +99,7 @@ NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsMsgMessageDataSource, Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgAccountManagerDataSource)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgSearchSession)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgSearchValidityManager)
-NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgSearchDataSource)
+NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsMsgSearchDataSource,Init)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgFilterService)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgFilterDataSource)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgFilterDelegateFactory)