diff --git a/comm/imodule.go b/comm/imodule.go
index d53e21c51..8bed59e1e 100644
--- a/comm/imodule.go
+++ b/comm/imodule.go
@@ -6,7 +6,7 @@ import (
 
 type (
 	IReddot interface {
-		Reddot(session IUserSession, rid ...ReddotType) map[ReddotType]bool
+		Reddot(session IUserSession, rid ...ReddotType) (reddot map[ReddotType]bool)
 	}
 )