diff --git a/index.php b/index.php
index b0342a8..f37fb14 100644
--- a/index.php
+++ b/index.php
@@ -1,6 +1,9 @@
 <?php
 $lat = $_GET['lat'];
 $lo = $_GET['long'];
+
+if ((!is_numeric($lat)) || (!is_numeric($lo))) {exit("lat/long not numeric!");};
+
 $hoodfile = shell_exec("./get_hood.sh $lat $lo");
 
 echo $hoodfile;