diff --git a/chocolateyUninstall.ps1.template b/chocolateyUninstall.ps1.template
index dc6aaea..5d71da7 100644
--- a/chocolateyUninstall.ps1.template
+++ b/chocolateyUninstall.ps1.template
@@ -1,7 +1,7 @@
 $packageName = 'TimberWinR' # arbitrary name for the package, used in messages
 $installerType = 'msi' #only one of these: exe, msi, msu
 $url = 'http://www.ericfontana.com/TimberWinR/TimberWinR-${version}.0.msi' # download url
-$silentArgs = '86CA5678-4687-4352-99EB-783CDB7C8D82 /quiet' 
+$silentArgs = '{86CA5678-4687-4352-99EB-783CDB7C8D82} /quiet' 
 $validExitCodes = @(0) #please insert other valid exit codes here, exit codes for ms http://msdn.microsoft.com/en-us/library/aa368542(VS.85).aspx
 UnInstall-ChocolateyPackage "$packageName" "$installerType" "$silentArgs" "$url" -validExitCodes $validExitCodes