diff --git a/source/libs/function/inc/builtinsimpl.h b/source/libs/function/inc/builtinsimpl.h
index ee976cbab32ab245e07a23a5a83310c7b145fec9..d7a9a59718fe3d6041af3c203eb325122a3534cd 100644
--- a/source/libs/function/inc/builtinsimpl.h
+++ b/source/libs/function/inc/builtinsimpl.h
@@ -98,6 +98,7 @@ bool getCsumFuncEnv(struct SFunctionNode* pFunc, SFuncExecEnv* pEnv);
 int32_t csumFunction(SqlFunctionCtx* pCtx);
 
 bool getMavgFuncEnv(struct SFunctionNode* pFunc, SFuncExecEnv* pEnv);
+bool mavgFunctionSetup(SqlFunctionCtx *pCtx, SResultRowEntryInfo* pResultInfo);
 int32_t mavgFunction(SqlFunctionCtx* pCtx);
 
 bool getSelectivityFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv);
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 1cc872985826b8722f61db2d191db4ef67108c66..412ad30ae2261e780e05dd4a67cf26466424459a 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -810,7 +810,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .classification = FUNC_MGT_NONSTANDARD_SQL_FUNC | FUNC_MGT_TIMELINE_FUNC,
     .translateFunc = translateMavg,
     .getEnvFunc   = getMavgFuncEnv,
-    .initFunc     = functionSetup,
+    .initFunc     = mavgFunctionSetup,
     .processFunc  = mavgFunction,
     .finalizeFunc = NULL
   },