---
description: "Learn more about: `.ERRNZ`"
title: ".ERRNZ"
ms.date: "12/17/2019"
f1_keywords: [".ERRNZ"]
helpviewer_keywords: [".ERRNZ directive"]
ms.assetid: 373a9222-140f-4505-8dec-ef370a069ebf
---
# `.ERRNZ`

Generates an error if *expression* is true (nonzero).

## Syntax

> **`.ERRNZ`** *expression* ⟦**`,`** *message*⟧

## See also

[Directives Reference](directives-reference.md)\
[MASM BNF Grammar](masm-bnf-grammar.md)