diff --git a/samgr_endpoint/source/endpoint.c b/samgr_endpoint/source/endpoint.c
index 371a0cbe62a891b3ca23f31ba46a7dd33358e3b7..773cbd93793db8bc25ef007a14955d93843ce4a9 100755
--- a/samgr_endpoint/source/endpoint.c
+++ b/samgr_endpoint/source/endpoint.c
@@ -463,8 +463,8 @@ static void HandleIpc(const Request *request, const Response *response)
     IpcIo req;
     IpcIoInitFromMsg(&req, ipcMsg);
     IpcIo reply;
-    uint8 data[IPC_IO_DATA_MAX];
-    IpcIoInit(&reply, data, IPC_IO_DATA_MAX, MAX_OBJECT_NUM);
+    uint8 data[IPC_IO_BIG_MAX];
+    IpcIoInit(&reply, data, IPC_IO_BIG_MAX, MAX_OBJECT_NUM);
     router->proxy->Invoke(router->proxy, request->msgValue, ipcMsg, &req, &reply);
     uint32_t flag = 0;
     GetFlag(ipcMsg, &flag);
@@ -687,4 +687,4 @@ static boolean SearchFixedPolicy(uid_t callingUid, PolicyTrans policy)
         }
     }
     return FALSE;
-}
\ No newline at end of file
+}