diff --git a/pagure/static/pagure.css b/pagure/static/pagure.css
index 34ac8c6..4b5e156 100644
--- a/pagure/static/pagure.css
+++ b/pagure/static/pagure.css
@@ -627,6 +627,7 @@ th[data-sort] {
 
 #cal-heatmap {
   padding:0.5em;
+  overflow:auto;
 }
 
 .attachment_list p {