diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 619664d6..0fca55d8 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -537,6 +537,10 @@ static bool drm_connector_set_mode(struct wlr_output *output,
 		conn->desired_mode = mode;
 		return false;
 	}
+	if (conn->output.current_mode == mode) {
+		// Nothing to do
+		return true;
+	}
 
 	wlr_log(WLR_INFO, "Modesetting '%s' with '%ux%u@%u mHz'",
 		conn->output.name, mode->width, mode->height, mode->refresh);