diff --git a/x/msgfees/types/keys.go b/x/msgfees/types/keys.go
index a810437f6c..dc18ab7379 100644
--- a/x/msgfees/types/keys.go
+++ b/x/msgfees/types/keys.go
@@ -30,8 +30,9 @@ func GetMsgFeeKey(msgType string) []byte {
 }
 
 var (
+	//MsgFeeKeyPrefix prefix for msgfee entry
 	MsgFeeKeyPrefix = []byte{0x00}
-
+	// ParamStoreKey key for msgfees module's params
 	ParamStoreKey = []byte{0x01}
 )