diff --git a/packages/mask/src/plugins/MaskBox/SNSAdaptor/components/DrawDialog.tsx b/packages/mask/src/plugins/MaskBox/SNSAdaptor/components/DrawDialog.tsx
index 8d338950a7be..317714bbf5d9 100644
--- a/packages/mask/src/plugins/MaskBox/SNSAdaptor/components/DrawDialog.tsx
+++ b/packages/mask/src/plugins/MaskBox/SNSAdaptor/components/DrawDialog.tsx
@@ -190,7 +190,7 @@ export function DrawDialog(props: DrawDialogProps) {
                                             title: 'Token Amount',
                                             inputMode: 'decimal',
                                             min: 0,
-                                            max: 999,
+                                            max: 255,
                                             minLength: 1,
                                             pattern: '^[0-9]*[.,]?[0-9]*$',
                                             spellCheck: false,