diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cbd8225..b876301 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -35,4 +35,6 @@ jobs:
     #     ros -e '(push (uiop:getcwd) ql:*local-project-directories*)' -e '(handler-case (ql:quickload :nsymbols) (error (a) (format t "caught error ~s~%~a~%" a a) (uiop:quit 17)))'
 
     - name: Run tests
-      run: ros -e '(ql:quickload :lisp-unit2)' -e '(handler-case (ql:quickload :nsymbols) (error (c) (uiop:quit 1)))'
+      run: |
+        ros -e '(ql:quickload :lisp-unit2)' \
+            -e '(handler-case (asdf:test-system :nsymbols) (error (c) (uiop:quit 1)))'