diff --git a/Build.ps1 b/Build.ps1
index 989743bd..e70dfda6 100644
--- a/Build.ps1
+++ b/Build.ps1
@@ -132,7 +132,7 @@ try {
         $isCI = $true
     }
     elseif ($env:GITHUB_ACTIONS) {
-        Write-Output "BUILD_NAME=$BuildName" >> $GITHUB_OUTPUT
+        Write-Output "BUILD_NAME=$BuildName" >> $env:GITHUB_OUTPUT
         $isCI = $true
     }