diff --git a/source/Ox.UI/css/Ox.UI.css b/source/Ox.UI/css/Ox.UI.css
index 266b5104..10f9dfbc 100644
--- a/source/Ox.UI/css/Ox.UI.css
+++ b/source/Ox.UI/css/Ox.UI.css
@@ -728,7 +728,7 @@ OxButton
 .OxButton.OxSymbol,
 .OxButton.OxSymbol:active,
 .OxButton.OxSymbol:focus {
-    padding: 2;
+    padding: 2px;
     border: 1px solid rgba(0, 0, 0, 0);
     background: rgba(0, 0, 0, 0);
     -moz-box-shadow: 0 0 0 rgba(0, 0, 0, 0);