diff --git a/includes/common.php b/includes/common.php
index 3d1f8a76e9..de68cfd788 100644
--- a/includes/common.php
+++ b/includes/common.php
@@ -802,7 +802,7 @@ function ceph_rrd($gtype) {
  * @return array Containing the lat and lng coords
 **/
 function parse_location($location) {
-    preg_match('/(\[)([0-9\. ]+),[ ]*([0-9\. ]+)(\])/', $location, $tmp_loc);
+    preg_match('/(\[)(-?[0-9\. ]+),[ ]*(-?[0-9\. ]+)(\])/', $location, $tmp_loc);
     if (!empty($tmp_loc[2]) && !empty($tmp_loc[3])) {
         return array('lat' => $tmp_loc[2], 'lng' => $tmp_loc[3]);
     }