diff --git a/tests/pthread_test.cpp b/tests/pthread_test.cpp
index aad2a4d..73090e1 100644
--- a/tests/pthread_test.cpp
+++ b/tests/pthread_test.cpp
@@ -585,7 +585,7 @@
   while (TEMP_FAILURE_RETRY(syscall(__NR_tgkill, getpid(), tid, 0)) != -1) {
     continue;
   }
-  ASSERT_EQ(ESRCH, errno);
+  ASSERT_ERRNO(ESRCH);
 
   ASSERT_EQ(ESRCH, pthread_kill(thread, 0));
 }