diff --git a/modules/system/assets/ui/less/popover.less b/modules/system/assets/ui/less/popover.less
index 92b5ca96d..1177ddaea 100644
--- a/modules/system/assets/ui/less/popover.less
+++ b/modules/system/assets/ui/less/popover.less
@@ -21,7 +21,7 @@ div.control-popover {
     background-clip: content-box;
     left: 0;
     top: 0;
-    z-index: @zindex-popover - 1;
+    z-index: @zindex-popover;
     visibility: hidden;
 
     &.in, &.fade {