diff --git a/lib/models/fields.js b/lib/models/fields.js
index 89d80119..4ced1a58 100644
--- a/lib/models/fields.js
+++ b/lib/models/fields.js
@@ -343,7 +343,7 @@ function addCustomField(listId, name, defaultValue, type, group, groupTemplate,
                         break;
                     default:
                         connection.release();
-                        return callback(null, true);
+                        return callback(null, fieldId);
                 }
 
                 connection.query(query, err => {