diff --git a/Directory.Build.props b/Directory.Build.props
index da34238..d3f6807 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -6,6 +6,7 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <LangVersion>preview</LangVersion>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
+    <DefineConstants>$(DefineConstants)$(FeatureFlags.Replace("#",";"))</DefineConstants>
   </PropertyGroup>
 
   <PropertyGroup>