diff --git a/src/Tool/Tools/Generate/Model/base-template.tpl b/src/Tool/Tools/Generate/Model/base-template.tpl
index a120901219487bdbd9c64804b73ec8580bc2960c..d444cbb3e40f52d49b07350e80a9e1e1a1d54707 100644
--- a/src/Tool/Tools/Generate/Model/base-template.tpl
+++ b/src/Tool/Tools/Generate/Model/base-template.tpl
@@ -77,7 +77,7 @@ abstract class <?php echo $className; ?>Base extends Model
     'longblob'   => 2 ^ 32 - 1,
     'longtext'   => 2 ^ 32 - 1,
 ][$field['type']] ?? null) { ?>
-        if (isset($<?php echo $field['varName']; ?>[<?php echo $length - 1; ?>]))
+        if (isset($<?php echo $field['varName']; ?>[<?php echo $length; ?>]))
         {
             throw new \InvalidArgumentException('The maximum length of $<?php echo $field['varName']; ?> is <?php echo $length; ?>');
         }