diff --git a/src/modules/pages/maintain/forms/form.ts b/src/modules/pages/maintain/forms/form.ts
index 4900051..cb3b573 100644
--- a/src/modules/pages/maintain/forms/form.ts
+++ b/src/modules/pages/maintain/forms/form.ts
@@ -197,7 +197,7 @@ export class MaintainForm extends BI.Widget {
             return false;
         }
 
-        if (!this.form.validation || !this.form.validation()) {
+        if (this.form.validation && !this.form.validation()) {
             return false;
         }