diff --git a/src/tests/monitor-unit-tests.c b/src/tests/monitor-unit-tests.c
index 7929a9c29..bbef527ef 100644
--- a/src/tests/monitor-unit-tests.c
+++ b/src/tests/monitor-unit-tests.c
@@ -583,6 +583,10 @@ check_monitor_configuration (MonitorTestCase *test_case)
                                             expected_current_mode_index)->data;
 
       g_assert (current_mode == expected_current_mode);
+      if (current_mode)
+        g_assert (meta_monitor_is_active (monitor));
+      else
+        g_assert (!meta_monitor_is_active (monitor));
 
       if (current_mode)
         {