diff --git a/src/popup.html b/src/popup.html
index 2ef4af0..64f4b3e 100644
--- a/src/popup.html
+++ b/src/popup.html
@@ -3,6 +3,7 @@
 
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<meta name="viewport" content="width=100vw">
 <link rel="stylesheet" href="css/common.css" type="text/css">
 <link rel="stylesheet" href="css/popup.css" type="text/css">
 <title>uMatrix panel</title>
