diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index e40ab3784d415bedc6cc155e22edf063833162c0..a75d5a2ecbb6c192d0461137c4982ab3a26898d9 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -4283,7 +4283,7 @@ int32_t stateDurationFunction(SqlFunctionCtx* pCtx) {
   SColumnInfoData* pOutput = (SColumnInfoData*)pCtx->pOutput;
 
   // TODO: process timeUnit for different db precisions
-  int32_t timeUnit = 1000;
+  int32_t timeUnit = 1;
   if (pCtx->numOfParams == 5) {  // TODO: param number incorrect
     timeUnit = pCtx->param[3].param.i;
   }