diff --git a/b2-include/b2functions.php b/b2-include/b2functions.php
index 2687fbf8d6..d0c05fd891 100644
--- a/b2-include/b2functions.php
+++ b/b2-include/b2functions.php
@@ -89,7 +89,7 @@ function wpautop($pee, $br=1) {
 function sanitize_title($title) {
     $title = strtolower($title);
 	$title = preg_replace('/&.+;/', '', $title); // kill entities
-    $title = preg_replace('/[^a-z0-9 ]/', '', $title);
+    $title = preg_replace('/[^a-z0-9 -]/', '', $title);
     $title = preg_replace('/\s+/', ' ', $title);
     $title = trim($title);
     $title = str_replace(' ', '-', $title);