diff --git a/styles/bootstrap/datepicker/css/datepicker.css b/styles/bootstrap/datepicker/css/datepicker.css
index 410e13e93..4e1a785e8 100644
--- a/styles/bootstrap/datepicker/css/datepicker.css
+++ b/styles/bootstrap/datepicker/css/datepicker.css
@@ -8,7 +8,7 @@
  *
  */
 .datepicker {
-  padding: 4px;
+  _padding: 4px;
   -webkit-border-radius: 4px;
   -moz-border-radius: 4px;
   border-radius: 4px;