diff --git a/src/PikaObj.c b/src/PikaObj.c
index 3ea0ff28e..77b3f0aec 100644
--- a/src/PikaObj.c
+++ b/src/PikaObj.c
@@ -410,7 +410,7 @@ exit:
     return res;
 }
 
-PikaObj* obj_getObjDirect(PikaObj* self, char* name) {
+static PikaObj* __obj_getObjDirect(PikaObj* self, char* name) {
     if (NULL == self) {
         return NULL;
     }
@@ -437,7 +437,7 @@ static PikaObj* __obj_getObjWithKeepDeepth(PikaObj* self,
     PikaObj* obj = self;
     for (int32_t i = 0; i < token_num - keepDeepth; i++) {
         char* token = strPopToken(token_buff, objPath_buff, '.');
-        obj = obj_getObjDirect(obj, token);
+        obj = __obj_getObjDirect(obj, token);
         if (obj == NULL) {
             goto exit;
         }
diff --git a/src/PikaObj.h b/src/PikaObj.h
index bbf8f2432..621195c88 100644
--- a/src/PikaObj.h
+++ b/src/PikaObj.h
@@ -130,7 +130,6 @@ int32_t obj_addOther(PikaObj* self, char* subObjectName, void* new_projcetFun);
 int32_t obj_setObjWithoutClass(PikaObj* self,
                                char* subObjectName,
                                void* new_projcetFun);
-PikaObj* obj_getObjDirect(PikaObj* self, char* name);
 PikaObj* obj_getObj(PikaObj* self, char* objPath);
 PikaObj* obj_getHostObj(PikaObj* self, char* objPath);