diff --git a/2-ui/3-event-details/4-mouse-drag-and-drop/article.md b/2-ui/3-event-details/4-mouse-drag-and-drop/article.md
index 6cb1152c..49ab88be 100644
--- a/2-ui/3-event-details/4-mouse-drag-and-drop/article.md
+++ b/2-ui/3-event-details/4-mouse-drag-and-drop/article.md
@@ -124,7 +124,7 @@ Let's update our algorithm:
 
     ```js
     // onmousemove
-    // ball has position:absoute
+    // ball has position:absolute
     ball.style.left = event.pageX - *!*shiftX*/!* + 'px';
     ball.style.top = event.pageY - *!*shiftY*/!* + 'px';
     ```