diff --git a/installer/resources/themes/susimail/light/susimail.css b/installer/resources/themes/susimail/light/susimail.css
index d56a901d4..4dceda0b5 100644
--- a/installer/resources/themes/susimail/light/susimail.css
+++ b/installer/resources/themes/susimail/light/susimail.css
@@ -1058,6 +1058,7 @@ h3#config {
 .topbuttons input.firstpage, .topbuttons input[name="firstpage"], .topbuttons input.lastpage, .topbuttons input[name="lastpage"],
 .topbuttons input.list {
      height: 26px;
+     width: 26px;
      margin: 2px;
 }