diff --git a/orm.go b/orm.go
index 5b5cde5..1ead68d 100644
--- a/orm.go
+++ b/orm.go
@@ -166,7 +166,7 @@ type ConditionExpr interface {
 	GetFieldResource() string
 	GetOperator() ConditionOperator
 
-	SetMatchPrefix(string)
+	SetMatchPrefix(string) ConditionExpr
 
 	AppendTo(Condition)
 	ToSql(m Model) db.Expression