diff --git a/src/js/select2/dropdown/attachBody.js b/src/js/select2/dropdown/attachBody.js
index 7380d9c6..1ef2373c 100644
--- a/src/js/select2/dropdown/attachBody.js
+++ b/src/js/select2/dropdown/attachBody.js
@@ -190,7 +190,14 @@ define([
       $offsetParent = $offsetParent.offsetParent();
     }
 
-    var parentOffset = $offsetParent.offset();
+    var parentOffset = {
+      top: 0,
+      left: 0
+    };
+
+    if ($.contains(document.body, $offsetParent[0])) {
+      parentOffset = $offsetParent.offset();
+    }
 
     css.top -= parentOffset.top;
     css.left -= parentOffset.left;