diff --git a/preview-template.html b/preview-template.html
index 619ab17e..e9a11c1c 100644
--- a/preview-template.html
+++ b/preview-template.html
@@ -7,7 +7,6 @@
       -webkit-user-select: none;
       -moz-user-select: none;
       -ms-user-select: none;
-      -o-user-select: none;
       user-select: none;
     }
     ul.emoji-list li {
@@ -44,4 +43,4 @@
     ));
     </script>
   </body>
-</html>
\ No newline at end of file
+</html>