diff --git a/client/css/style.css b/client/css/style.css
index f1cb95e1..2e54c2c9 100644
--- a/client/css/style.css
+++ b/client/css/style.css
@@ -104,7 +104,7 @@ body {
 	  * Disable pull-to-refresh on mobile that conflicts with scrolling the message list.
 	  * See http://stackoverflow.com/a/29313685/1935861
 	  */
-	overflow-y: hidden;
+	overflow: hidden; /* iOS Safari requires overflow rather than overflow-y */
 }
 
 a,