diff --git a/README.md b/README.md
index 497ca243b8..8baefd51be 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,7 @@ Run `npm test` after building
 
 Debugging :bug:
 --------------------------------
-### Show a debug messages
+### Show debug messages
 Misskey uses [debug](https://github.com/visionmedia/debug) and the namespace is `misskey:*`.
 
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