diff --git a/core/css/guest.css b/core/css/guest.css
index 5f15998c44ee17ead750cc386f17ceaa009ecb11..03fa08955acda6a57323dc445ec4f538130e7a72 100644
--- a/core/css/guest.css
+++ b/core/css/guest.css
@@ -156,7 +156,7 @@ form #datadirField legend {
 }
 
 #alternative-logins {
-	margin: 30px 15px 20px;
+	margin: auto;
 	display: block;
 	min-width: 260px;
 	max-width: 400px;