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AvoidReservedWordsAsFunctionNames.md

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description Avoid reserved words as function names
ms.date 07/21/2026
ms.topic reference
title AvoidReservedWordsAsFunctionNames

AvoidReservedWordsAsFunctionNames

Severity Level: Warning

Default state: Always enabled

Description

This rule detects function names that use PowerShell reserved words. Using reserved words as function names causes errors or unexpected behavior in PowerShell scripts. Choose function names that don't conflict with any PowerShell reserved words.

See about_Reserved_Words for a list of reserved words in PowerShell.

Example

Noncompliant

# Function is a reserved word
function function {
    Write-Host "Hello, World!"
}

Compliant

# myFunction is not a reserved word
function myFunction {
    Write-Host "Hello, World!"
}

Configure rule

This rule is always enabled and isn't configurable. Use one of the following methods to avoid using this rule:

  • Create a custom rule configuration file to include only the rules you want or exclude the rules you don't want.
  • Add the appropriate rule suppression attributes to your code to suppress the rule for specific code blocks. For more information, see the Suppressing rules section of Using PSScriptAnalyzer.