diff --git a/trunk/src/utest/srs_utest_app.cpp b/trunk/src/utest/srs_utest_app.cpp
index a0ad704f7..95acdbaf9 100644
--- a/trunk/src/utest/srs_utest_app.cpp
+++ b/trunk/src/utest/srs_utest_app.cpp
@@ -149,7 +149,8 @@ VOID TEST(AppCoroutineTest, Dummy)
     SrsDummyCoroutine dc;
 
     if (true) {
-        EXPECT_TRUE(dc.cid().empty());
+        SrsContextId v = dc.cid();
+        EXPECT_FALSE(v.empty());
 
         srs_error_t err = dc.pull();
         EXPECT_TRUE(err != srs_success);
@@ -165,7 +166,8 @@ VOID TEST(AppCoroutineTest, Dummy)
     if (true) {
         dc.stop();
 
-        EXPECT_TRUE(dc.cid().empty());
+        SrsContextId v = dc.cid();
+        EXPECT_FALSE(v.empty());
 
         srs_error_t err = dc.pull();
         EXPECT_TRUE(err != srs_success);
@@ -181,7 +183,8 @@ VOID TEST(AppCoroutineTest, Dummy)
     if (true) {
         dc.interrupt();
 
-        EXPECT_TRUE(dc.cid().empty());
+        SrsContextId v = dc.cid();
+        EXPECT_FALSE(v.empty());
 
         srs_error_t err = dc.pull();
         EXPECT_TRUE(err != srs_success);