diff --git a/caravel/assets/javascripts/dashboard/main.css b/caravel/assets/javascripts/dashboard/main.css
index a9030074ee..f36a08ccd9 100644
--- a/caravel/assets/javascripts/dashboard/main.css
+++ b/caravel/assets/javascripts/dashboard/main.css
@@ -28,8 +28,8 @@ div.widget .chart-controls {
   box-shadow: 2px 1px 5px -2px #aaa;
   background-color: #fff;
   overflow: visible;
-  z-index: 5;
 }
+
 .dashboard .slice-grid .dragging,
 .dashboard .slice-grid .resizing {
   opacity: 0.5;
@@ -53,10 +53,6 @@ div.widget .chart-controls {
   height: 100%;
 }
 
-.dashboard  div.nvtooltip {
-  z-index: 888;  /* this lets tool tips go on top of other slices  */
-}
-
 .modal img.loading {
   width: 50px;
   margin: 0;