diff --git a/xpfe/appshell/public/MANIFEST_IDL b/xpfe/appshell/public/MANIFEST_IDL
index b446cbe356cd..69441d5dd086 100644
--- a/xpfe/appshell/public/MANIFEST_IDL
+++ b/xpfe/appshell/public/MANIFEST_IDL
@@ -10,4 +10,5 @@ nsIFileLocator.idl
 nsISessionHistory.idl
 nsIWindowMediator.idl
 nsIXULWindow.idl
+nsIUserInfo.idl
 
diff --git a/xpfe/appshell/public/Makefile.in b/xpfe/appshell/public/Makefile.in
index 8122000b1737..694c118a0bab 100644
--- a/xpfe/appshell/public/Makefile.in
+++ b/xpfe/appshell/public/Makefile.in
@@ -48,6 +48,7 @@ XPIDLSRCS	= \
 		nsISessionHistory.idl \
 		nsIWindowMediator.idl \
 		nsIXULWindow.idl \
+        nsIUserInfo.idl \
 		$(NULL)
 
 EXPORTS		:= $(addprefix $(srcdir)/, $(EXPORTS))
diff --git a/xpfe/appshell/public/makefile.win b/xpfe/appshell/public/makefile.win
index 6945426ddbd5..1e3a5b69ae48 100644
--- a/xpfe/appshell/public/makefile.win
+++ b/xpfe/appshell/public/makefile.win
@@ -35,6 +35,7 @@ XPIDLSRCS =                        \
 		.\nsISessionHistory.idl \
 		.\nsIWindowMediator.idl	   \
 		.\nsIXULWindow.idl       \
+        .\nsIUserInfo.idl   \
 		$(NULL)
 
 EXPORTS =                         \