diff --git a/www/kanban/app-kanban.less b/www/kanban/app-kanban.less
index 3b6a101ad..edf83490f 100644
--- a/www/kanban/app-kanban.less
+++ b/www/kanban/app-kanban.less
@@ -26,7 +26,7 @@
     @palette8: #E4CAFF;
 
     .kanban-board-header {
-        background-color: '#888';
+        background-color: #AAA;
     }
 
     .cp-kanban-palette-nocolor {