diff --git a/application/Espo/Core/Utils/Database/Orm/Converter.php b/application/Espo/Core/Utils/Database/Orm/Converter.php
index 23afce8f48..1ee11b5323 100644
--- a/application/Espo/Core/Utils/Database/Orm/Converter.php
+++ b/application/Espo/Core/Utils/Database/Orm/Converter.php
@@ -186,7 +186,9 @@ class Converter
 
                     case 'foreignType':
                         $fieldParams['dbType'] = Entity::VARCHAR;
-                        $fieldParams['len'] = $this->defaultLength['varchar'];
+                        if (empty($fieldParams['len'])) {
+                            $fieldParams['len'] = $this->defaultLength['varchar'];
+                        }
                         break;
 
                     case 'bool':