diff --git a/windows/win_msi.ps1 b/windows/win_msi.ps1
index f1381e9bf23..c162243f2c8 100644
--- a/windows/win_msi.ps1
+++ b/windows/win_msi.ps1
@@ -47,7 +47,7 @@ Else
 
 Set-Attr $result "changed" $true;
 
-$logcontents = Get-Content $logfile;
+$logcontents = Get-Content $logfile | Out-String;
 Remove-Item $logfile;
 
 Set-Attr $result "log" $logcontents;