diff --git a/eng/build-utils.ps1 b/eng/build-utils.ps1
index d2978cfaebde117f77622ccb80219704cf46396d..61db1261098d5e0e1b99403edcc4061af168b2e9 100644
--- a/eng/build-utils.ps1
+++ b/eng/build-utils.ps1
@@ -278,7 +278,7 @@ function Make-BootstrapBuild() {
     $packageName = "Microsoft.Net.Compilers.Toolset"
     $projectPath = "src\NuGet\$packageName\$packageName.Package.csproj"
 
-    Run-MSBuild $projectPath "/restore /t:Pack /p:DotNetUseShippingVersions=true /p:InitialDefineConstants=BOOTSTRAP /p:PackageOutputPath=`"$dir`" /p:ApplyNgenOptimization=false" -logFileName "Bootstrap" -configuration $bootstrapConfiguration
+    Run-MSBuild $projectPath "/restore /t:Pack /p:DotNetUseShippingVersions=true /p:InitialDefineConstants=BOOTSTRAP /p:PackageOutputPath=`"$dir`" /p:EnableNgenOptimization=false" -logFileName "Bootstrap" -configuration $bootstrapConfiguration
     $packageFile = Get-ChildItem -Path $dir -Filter "$packageName.*.nupkg"
     Unzip "$dir\$packageFile" $dir