diff --git a/locale/en-US/xhtml11.css b/locale/en-US/xhtml11.css
index 819f3c4e..0244ce35 100644
--- a/locale/en-US/xhtml11.css
+++ b/locale/en-US/xhtml11.css
@@ -321,6 +321,7 @@ fieldset.paypal {
 .command {
     font-weight: bold;
     color: #632610;
+    white-space: nowrap;
 }
 .mapping {
     font-weight: bold;