diff --git a/bench/test-flash-sales.sh b/bench/test-flash-sales.sh
index 444aeef..b108040 100755
--- a/bench/test-flash-sales.sh
+++ b/bench/test-flash-sales.sh
@@ -6,6 +6,7 @@ export LOG_LEVEL=fatal
 export STORE_DRIVER=redis
 export STORE_HOST=localhost
 export STORE_PORT=6379
+export BUSI_REDIS=localhost:6379
 ./bench redis &
 echo 'sleeping 3s for dtm bench to run up.' && sleep 3
 curl "http://127.0.0.1:8083/api/busi_bench/benchFlashSalesReset"
diff --git a/test/busi/base_types.go b/test/busi/base_types.go
index 2d24948..c20ba89 100644
--- a/test/busi/base_types.go
+++ b/test/busi/base_types.go
@@ -131,6 +131,7 @@ type mainSwitchType struct {
 // MainSwitch controls busi success or fail
 var MainSwitch mainSwitchType
 
+// GetRedisAccountKey return redis key for uid
 func GetRedisAccountKey(uid int) string {
 	return fmt.Sprintf("{a}-redis-account-key-%d", uid)
 }