diff --git a/web/app.js b/web/app.js
index b43b237c2..ea154e465 100644
--- a/web/app.js
+++ b/web/app.js
@@ -1842,7 +1842,7 @@ function webViewerInitialized() {
       });
     });
 
-    // Enable draging-and-dropping a new PDF file onto the viewerContainer.
+    // Enable dragging-and-dropping a new PDF file onto the viewerContainer.
     appConfig.mainContainer.addEventListener("dragover", function(evt) {
       evt.preventDefault();