diff --git a/setup/createtables_mysql.inc.php b/setup/createtables_mysql.inc.php
index 5c40ebfc3e..0a5170892d 100644
--- a/setup/createtables_mysql.inc.php
+++ b/setup/createtables_mysql.inc.php
@@ -19,7 +19,7 @@
   $db->query($sql);  
  
   $sql = "CREATE TABLE applications (
-    app_name     varchar(25),
+    app_name     varchar(25) NOT NULL,
     app_title    varchar(50),
     app_enabled  int,
     app_order    int,