diff --git a/tools/ratbagctl.test.in b/tools/ratbagctl.test.in
index 78ac7f3b..eca7cee5 100755
--- a/tools/ratbagctl.test.in
+++ b/tools/ratbagctl.test.in
@@ -109,12 +109,12 @@ class TestRatbagCtl(unittest.TestCase):
 
     def launch_good_test(self, params):
         returncode, stdout, stderr = self.run_ratbagctl(params)
-        self.assertEqual(returncode, 0)
+        self.assertEqual(returncode, 0, msg=stderr + stdout)
         return stdout
 
     def launch_fail_test(self, params):
         returncode, stdout, stderr = self.run_ratbagctl(params)
-        self.assertNotEqual(returncode, 0)
+        self.assertNotEqual(returncode, 0, msg=stderr + stdout)
         return stdout
 
     def launch_fail_with_exception_test(self, params, exception):