diff --git a/coverage/README b/coverage/README
index 78a01826aa..a4c3dfcb03 100644
--- a/coverage/README
+++ b/coverage/README
@@ -13,5 +13,5 @@ Limitation
 
 TODO
 
- * more reduce bundled simplecov(additional configuration, formatter, etc)
+ * more reduce bundled simplecov(additional configuration, formatter, etc.)
  * measure rubyspec coverage