diff --git a/popup/control.html b/popup/control.html
index 5c6ba97..1f8123f 100644
--- a/popup/control.html
+++ b/popup/control.html
@@ -19,6 +19,7 @@
 <html>
 <head>
     <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Simple Content Editor Control Popup</title>
     <style>
         body {
