slug regexp

diff --git a/ipf/utils.php b/ipf/utils.php
index 584b82b69a90cc4b8dbb056b663f80426b1e35d4..50b33fd22f1a5b078c83a7fc9a4a7493fb02c3a7 100644 (file)
--- a/ipf/utils.php
+++ b/ipf/utils.php
@@ -250,7 +250,7 @@ class IPF_Utils {
     
     static function toSlug($slug){
         if ($slug){ 
-            return strtolower(preg_replace('/[^A-Z^a-z^0-9^\/]+/', '-', $slug));
+            return strtolower(preg_replace('/[^A-Z^a-z^0-9^\/\_]+/', '-', $slug));
         }
         return $slug;
     }