diff --git a/eng/common/scripts/Detect-Api-Changes.ps1 b/eng/common/scripts/Detect-Api-Changes.ps1
index 8b8121df65d5..82911ce26f8c 100644
--- a/eng/common/scripts/Detect-Api-Changes.ps1
+++ b/eng/common/scripts/Detect-Api-Changes.ps1
@@ -104,7 +104,7 @@ if (!($FindArtifactForApiReviewFn -and (Test-Path "Function:$FindArtifactForApiR
 $responses = @{}
 
 $packageProperties = Get-ChildItem -Recurse -Force "$configFileDir" `
-  | Where-Object { $_.Extension -eq '.json' -and $_.FullName -notmatch '\\_.*?\\' }
+  | Where-Object { $_.Extension -eq '.json' -and $_.FullName -notmatch '[/\\]_.*?[/\\]' }
 
 Write-Host "Package Properties: $($packageProperties.Count)"
 Write-Host "$packageProperties"