diff --git a/mail/Evolution-Mail.idl b/mail/Evolution-Mail.idl
index 844a1eaaf5..2ea6860c2b 100644
--- a/mail/Evolution-Mail.idl
+++ b/mail/Evolution-Mail.idl
@@ -4,6 +4,7 @@
 
 
 #include <shell/Evolution-Shell.idl>
+#include <shell/Evolution-Component.idl>
 
 module GNOME {
 module Evolution {