diff --git a/select2.js b/select2.js
index acad1d09..34d25154 100644
--- a/select2.js
+++ b/select2.js
@@ -976,7 +976,7 @@ the specific language governing permissions and limitations under the Apache Lic
 
         // abstract
         positionDropdown: function() {
-            var offset = this.container.offset(),
+            var offset = { top: this.container[0].offsetTop, left: this.container[0].offsetLeft },
                 height = this.container.outerHeight(false),
                 width = this.container.outerWidth(false),
                 dropHeight = this.dropdown.outerHeight(false),