diff --git a/notebook/static/notebook/less/tooltip.less b/notebook/static/notebook/less/tooltip.less
index ee372d69d..a44421b8d 100644
--- a/notebook/static/notebook/less/tooltip.less
+++ b/notebook/static/notebook/less/tooltip.less
@@ -85,7 +85,9 @@
 .tooltiptext
 {
     /*avoid the button to overlap on some docstring*/
-    padding-right:30px
+    padding-right:30px;
+     /*avoid the ui-icon(s) from overlapping the tooltip*/
+     padding-top:30px;
 }
 
 .ipython_tooltip {