diff --git a/dblayeroo.php b/dblayeroo.php
index d7755ea..5f880d4 100644
--- a/dblayeroo.php
+++ b/dblayeroo.php
@@ -2515,10 +2515,12 @@ class dblayeroo
         continue;
       }
       if (in_array ("not null", $params) &&
+          ! in_array ("autoincrement", $params) &&
           $values[$field] === null)
       {
         $errors[$field] = sprintf (dgettext ("domframework",
-                             "Field '%s' null and defined as not null"));
+                           "Field '%s' null and defined as NOT NULL and ".
+                           "not Autoincrement"), $field);
         continue;
       }
       if (! is_string ($values[$field]) && ! is_integer ($values[$field]) &&