diff --git a/test/test-stress.c b/test/test-stress.c
index 9b64d243..cf01dc40 100644
--- a/test/test-stress.c
+++ b/test/test-stress.c
@@ -250,7 +250,9 @@ int main(int argc, char** argv) {
     test_leak();
 #endif
 
-  // mi_collect(true);
+#ifndef NDEBUG
+  mi_collect(true);
+#endif
 #ifndef USE_STD_MALLOC
   mi_stats_print(NULL);
 #endif