diff --git a/templates/index.html b/templates/index.html
index e4d7479..7d4c798 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -59,6 +59,7 @@ <h1>rmbg</h1>
       });
 
       dropZone.addEventListener("dragover", function (e) {
+        e.preventDefault();
         this.classList.add("dragover");
       });