diff --git a/phpBB/styles/prosilver/theme/responsive.css b/phpBB/styles/prosilver/theme/responsive.css
index 8c05a8b3d8..7e4caf5301 100644
--- a/phpBB/styles/prosilver/theme/responsive.css
+++ b/phpBB/styles/prosilver/theme/responsive.css
@@ -495,10 +495,8 @@ fieldset.display-actions {
 }
 
 .phpbb_alert {
-	left: 0;
 	width: auto;
 	margin: 0 5px;
-	right: 0;
 }
 
 .attach-comment dfn {