diff --git a/tests/ut/ge/single_op/single_op_model_unittest.cc b/tests/ut/ge/single_op/single_op_model_unittest.cc
index 6a06115b..28a8418c 100644
--- a/tests/ut/ge/single_op/single_op_model_unittest.cc
+++ b/tests/ut/ge/single_op/single_op_model_unittest.cc
@@ -379,7 +379,10 @@ TEST_F(UtestSingleOpModel, build_dynamic_task02) {
   ge_model->SetGraph(GraphUtils::CreateGraphFromComputeGraph(graph));
   shared_ptr<domi::ModelTaskDef> model_task_def = make_shared<domi::ModelTaskDef>();
   ge_model->SetModelTaskDef(model_task_def);
-
+  
+  AicpuTaskStruct args;
+  args.head.length = sizeof(args);
+  args.head.ioAddrNum = 6;
   domi::TaskDef *task_def = model_task_def->add_task();
   task_def->set_type(RT_MODEL_TASK_KERNEL);
   domi::KernelDef *kernel_def = task_def->mutable_kernel();