diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index 8fb6a9c42..a8e8b3c5d 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -1359,6 +1359,7 @@ body.tw-dirty span.tw-dirty-indicator, body.tw-dirty span.tw-dirty-indicator svg
 
 .tw-file-input-wrapper {
 	position: relative;
+	overflow: hidden;
 }
 
 .tw-file-input-wrapper input[type=file] {