diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 1df64fe53..0520fe91a 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -31,9 +31,10 @@ FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/test_helper.ps1
 "$PSDefaultParameterValues['*:Encoding'] = 'ascii'\n"
 "if (Test-Path $args[2]) { Remove-Item -Force $args[2] } \n"
 "$ErrorActionPreference = \"Stop\"\n"
+"$OutputEncoding = [Text.UTF8Encoding]::new($false)"
 "$OutputEncoding\n"
-"Get-Content $args[1] -Encoding ASCII| & $args[0]\n"
-"If ((Get-Content *$args[2] | %{$_ -match \"FATAL\"}) -contains $true) {\n"
+"Get-Content $args[1] | & $args[0]\n"
+"If ((Get-Content $args[2] | %{$_ -match \"FATAL\"}) -contains $true) {\n"
 "echo Error\n"
 "exit 1\n"
 "} else {\n"