diff --git a/js/tooltip.js b/js/tooltip.js
index 27367880f7..58ec5328e7 100644
--- a/js/tooltip.js
+++ b/js/tooltip.js
@@ -192,13 +192,12 @@
 
       if (autoPlace) {
         var orgPlacement = placement
-        var $container   = this.options.container ? $(this.options.container) : this.$element.parent()
-        var containerDim = this.getPosition($container)
+        var viewportDim = this.getPosition(this.$viewport)
 
-        placement = placement == 'bottom' && pos.bottom + actualHeight > containerDim.bottom ? 'top'    :
-                    placement == 'top'    && pos.top    - actualHeight < containerDim.top    ? 'bottom' :
-                    placement == 'right'  && pos.right  + actualWidth  > containerDim.width  ? 'left'   :
-                    placement == 'left'   && pos.left   - actualWidth  < containerDim.left   ? 'right'  :
+        placement = placement == 'bottom' && pos.bottom + actualHeight > viewportDim.bottom ? 'top'    :
+                    placement == 'top'    && pos.top    - actualHeight < viewportDim.top    ? 'bottom' :
+                    placement == 'right'  && pos.right  + actualWidth  > viewportDim.width  ? 'left'   :
+                    placement == 'left'   && pos.left   - actualWidth  < viewportDim.left   ? 'right'  :
                     placement
 
         $tip