diff --git a/business/model/dao/act.go b/business/model/dao/act.go
index ec8fd2a47..8e3db3c8c 100644
--- a/business/model/dao/act.go
+++ b/business/model/dao/act.go
@@ -406,11 +406,11 @@ func GetEffectiveActStoreSkuInfo(db *DaoDB, actID int, vendorIDs []int, actType
 		sqlParams = append(sqlParams, model.GetVendorMask(vendorIDs...), vendorIDs)
 	}
 	if actID > 0 {
-		sql = " AND t1.id = ?"
+		sql += " AND t1.id = ?"
 		sqlParams = append(sqlParams, actID)
 	}
 	if actType != model.ActTypeAll {
-		sql = " AND t1.`type` = ?"
+		sql += " AND t1.type = ?"
 		sqlParams = append(sqlParams, actType)
 	}
 	if len(storeIDs) > 0 {