diff --git a/panels/display/cc-display-panel.c b/panels/display/cc-display-panel.c
index 4b7cd2359..f4af1b051 100644
--- a/panels/display/cc-display-panel.c
+++ b/panels/display/cc-display-panel.c
@@ -635,6 +635,8 @@ set_current_output (CcDisplayPanel   *panel,
         cc_display_monitor_set_active (output, TRUE);
       if (panel->current_output)
         cc_display_monitor_set_active (panel->current_output, FALSE);
+
+      update_apply_button (panel);
     }
 
   panel->current_output = output;