diff --git a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
index 95afb8ea7f50a1550fc1d683b03f01faeda96d48..8ae4184751093b09b2ada6621d2335e58d027ba8 100644
--- a/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
+++ b/services/audiomanager/test/unittest/sourcedevice/src/dmic_dev_test.cpp
@@ -197,6 +197,7 @@ HWTEST_F(DMicDevTest, Start_001, TestSize.Level1)
     EXPECT_FALSE(mic_->IsOpened());
 
     mic_->micTrans_ = std::make_shared<MockIAudioDataTransport>();
+    EXPECT_EQ(DH_SUCCESS, mic_->SetUp());
     mic_->isTransReady_.store(true);
     EXPECT_EQ(DH_SUCCESS, mic_->Start());
     EXPECT_TRUE(mic_->IsOpened());