diff --git a/compiler-rt/test/sanitizer_common/TestCases/Posix/timer.cpp b/compiler-rt/test/sanitizer_common/TestCases/Posix/timer.cpp
--- a/compiler-rt/test/sanitizer_common/TestCases/Posix/timer.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/Posix/timer.cpp
@@ -34,5 +34,7 @@
   assert(curr_value.it_value.tv_sec <= new_value.it_value.tv_sec);
   assert(curr_value.it_value.tv_nsec <= new_value.it_value.tv_nsec);
 
+  assert(timer_delete(timerid) == 0);
+
   return 0;
 }