diff --git a/install-server.bat b/install-server.bat
index b74c131..5093838 100644
--- a/install-server.bat
+++ b/install-server.bat
@@ -5,10 +5,10 @@ set PATH=%PATH%;%windir%\Microsoft.NET\Framework\v4.0.30319
 :: msbuild server/RDSFactor.sln /property:Configuration=release
 
 :: Unblock the downloaded file, otherwise stupid output from InstallUtil
-powershell -Command {Unblock-File -Path server\bin\Release\RDSFactor.exe}
+powershell -Command "& {Unblock-File -Path server\bin\Release\RDSFactor.exe}"
 
 :: install it
 InstallUtil server\bin\Release\RDSFactor.exe
 
 :: start it
-net start RDSFactor
\ No newline at end of file
+net start RDSFactor