diff --git a/config.php b/config.php
index 1150e5c..6e63cf3 100644
--- a/config.php
+++ b/config.php
@@ -4,7 +4,7 @@
   // *******************************************
 
   $postgres_uri = getenv('DATABASE_URL');
-  preg_match('^postgres://(.*):(.*)@(.*):(.*)/(.*)$', getenv('DATABASE_URL'), $matches);
+  preg_match('#^postgres://(.*):(.*)@(.*):(.*)/(.*)$#', getenv('DATABASE_URL'), $matches);
   define('DB_TYPE', "pgsql");
   define('DB_HOST', $matches[3]);
   define('DB_USER', $matches[1]);