diff --git a/2-ui/3-event-details/5-keyboard-events/article.md b/2-ui/3-event-details/5-keyboard-events/article.md
index 5430606e..7decd91b 100644
--- a/2-ui/3-event-details/5-keyboard-events/article.md
+++ b/2-ui/3-event-details/5-keyboard-events/article.md
@@ -123,7 +123,7 @@ function checkPhoneKey(key) {
 <input *!*onkeydown="return checkPhoneKey(event.key)"*/!* placeholder="Phone, please" type="tel">
 ```
 
-Please note that special keys like `key:Backspace`, `key:Left`, `key:Right`, `key:Ctrl+V` do not work in the input. That's a side-effect effect of the strict filter `checkPhoneKey`.
+Please note that special keys like `key:Backspace`, `key:Left`, `key:Right`, `key:Ctrl+V` do not work in the input. That's a side-effect of the strict filter `checkPhoneKey`.
 
 Let's relax it a little bit: