diff --git a/src/UI/Calendar/calendar.less b/src/UI/Calendar/calendar.less
index 4f89aea83..8d6eb947a 100644
--- a/src/UI/Calendar/calendar.less
+++ b/src/UI/Calendar/calendar.less
@@ -212,7 +212,8 @@
   }
 
   .legend-labels {
-    width : 500px;
+    max-width : 100%;
+    width     : 500px;
 
     @media (max-width: @screen-xs-min) {
       width : 400px;