diff --git a/mail/fdm/Makefile b/mail/fdm/Makefile
index 3eacdf868..49c02f15e 100644
--- a/mail/fdm/Makefile
+++ b/mail/fdm/Makefile
@@ -48,7 +48,7 @@ define Build/Prepare
 endef
 
 define Package/fdm/config
-	source "$(SOURCE)/Config.in
+	source "$(SOURCE)/Config.in"
 endef
 
 define Package/fdm/conffiles