diff --git a/proto-cuda/windows-app/igneum-common.ps1 b/proto-cuda/windows-app/igneum-common.ps1
index 05bc0b21f..6fabcfcf0 100644
--- a/proto-cuda/windows-app/igneum-common.ps1
+++ b/proto-cuda/windows-app/igneum-common.ps1
@@ -94,7 +94,7 @@ $vendors = @{}   # $vendors[name] = @{ name; card; exe; instances; rebuilds; bui
 function Get-EvmAddress([string]$vendorName) {
     if ($payoutEvm) { return $payoutEvm.Trim().ToLower() }
     $sha = [System.Security.Cryptography.SHA256]::Create()
-    $bytes = $sha.ComputeHash([Text.Encoding]::UTF8.GetBytes("igneum-evm-payout-v0:$machine:$vendorName"))
+    $bytes = $sha.ComputeHash([Text.Encoding]::UTF8.GetBytes("igneum-evm-payout-v0:${machine}:${vendorName}"))
     $sha.Dispose()
     return '0x' + (($bytes[0..19] | ForEach-Object { $_.ToString('x2') }) -join '')
 }