diff --git a/htdocs/install/default.css b/htdocs/install/default.css
index e469a3bbb80..b7fd69d9ecb 100644
--- a/htdocs/install/default.css
+++ b/htdocs/install/default.css
@@ -87,6 +87,9 @@ div.soustitre {
 tr.trlineforchoice {
     height: 4em;
 }
+a.button.runupgrade {
+    padding: 10px;
+}
 
 /* Force values for small screen 570 */
 @media only screen and (max-width: 570px)