diff --git a/src/utils/DOMHelper.js b/src/utils/DOMHelper.js
index 5838df9..bb4df75 100644
--- a/src/utils/DOMHelper.js
+++ b/src/utils/DOMHelper.js
@@ -100,7 +100,7 @@ const PAGE_TYPES = {
  * this function tries to tell which type current page is of
  *
  * note: not determining through file extension here
- * becasuse there might be files using wrong extension name
+ * because there might be files using wrong extension name
  *
  * TODO: distinguish type 'preview'
  */