diff --git a/docs/middleware/builtin/timing.md b/docs/middleware/builtin/timing.md
index 8a8a547d..99241826 100644
--- a/docs/middleware/builtin/timing.md
+++ b/docs/middleware/builtin/timing.md
@@ -83,7 +83,7 @@ Show the total response time. The default is `true`.
Whether timings should be added to the headers or not. The default is `true`.
-### totalDescription: `boolean`
+### totalDescription: `string`
Description for the total response time. The default is `Total Response Time`.