diff --git a/src/base/layer/layer.popover.js b/src/base/layer/layer.popover.js
index 646758527..9109a9a4e 100644
--- a/src/base/layer/layer.popover.js
+++ b/src/base/layer/layer.popover.js
@@ -75,6 +75,8 @@ BI.Popover = BI.inherit(BI.Widget, {
                                 title: o.header,
                                 textAlign: "left"
                             },
+                            top: 0,
+                            bottom: 0,
                             left: BI.SIZE_CONSANTS.H_GAP_SIZE,
                             right: o.closable ? 0 : BI.SIZE_CONSANTS.H_GAP_SIZE
                         }]