diff --git a/windows/win_msi.ps1 b/windows/win_msi.ps1
index 42debeaa947..3af765a7051 100644
--- a/windows/win_msi.ps1
+++ b/windows/win_msi.ps1
@@ -62,7 +62,7 @@ Else
 
 Set-Attr $result "changed" $true;
 
-$logcontents = Get-Content $logfile;
+$logcontents = Get-Content $logfile | Out-String;
 Remove-Item $logfile;
 
 Set-Attr $result "log" $logcontents;