diff --git a/README.md b/README.md
index 80c5eb6..d8480b4 100644
--- a/README.md
+++ b/README.md
@@ -380,7 +380,7 @@ lgt8f328で観ていると+-60msec程度揺らぐので、100サンプリング
 GitHubの利用は初めてですので、お作法等ご容赦ください
 
 Please feel free to send pull request about this library. If you have any enhancements or bugfix.
-It seems similar time code format uses WWVB. It may be also works with WWVB protocol by making small modification. I don't implement parity check functionality due to that.
+It seems similar time code format uses in WWVB. It may be also works with WWVB protocol by making small modification. I don't implement parity check functionality due to that.
 
 I have put WWVB version code on another branch. [WWVB version](https://github.com/Blue-Crescent/JJYReceiver/tree/wwvb "See WWVB Branch")
 I can't check WWVB modification will be worked or not. Because, I can't receive WWVB wave due to geographical reason.