diff --git a/tests/tests.yml b/tests/tests.yml
index 9cda033..59535f9 100644
--- a/tests/tests.yml
+++ b/tests/tests.yml
@@ -28,9 +28,12 @@
     - debugtest:
         dir: python/selftest
         run: VERSION=3.9 PYTHON=python3-debug X="-x test_wsgiref" ./parallel.sh
-    - optimizedflags:
+    - optimizedflags_self:
         dir: python/flags
-        run: python3 ./assertflags.py -O3
+        run: python3 ./assertflags.py -O3 PY_BUILTIN_MODULE_CFLAGS PY_CFLAGS_NODIST PY_CORE_CFLAGS PY_STDMODULE_CFLAGS
+    - optimizedflags_3rd:
+        dir: python/flags
+        run: python3 ./assertflags.py -O2 CFLAGS PY_CFLAGS
     - debugflags:
         dir: python/flags
         run: python3-debug ./assertflags.py -O0