diff --git a/lam/lib/account.inc b/lam/lib/account.inc
index c45e30fa..4f24c8a5 100644
--- a/lam/lib/account.inc
+++ b/lam/lib/account.inc
@@ -510,7 +510,7 @@ function checkid($values, $type, $values_old=false) { // if value is empty will
 		if (!$values_old) return _('ID is used from ' . $dn . ' !');
 		 else if ($dn!=$values_old->general_dn) return _('ID is used from ' . $dn . ' !');
 		 }
-	if ( $values->general_uidNumber < $minID || $values->general_uidNumber > $maxID) return _('Please enter a value between '. $minID . ' and ' . $maxID . '!');
+	if ( $values->general_uidNumber <= $minID || $values->general_uidNumber => $maxID) return _('Please enter a value between '. $minID . ' and ' . $maxID . '!');
 	return intval($values->general_uidNumber);
 	}