diff --git a/src/System.CommandLine/System.CommandLine.csproj b/src/System.CommandLine/System.CommandLine.csproj
index 05d2847639..8f47927267 100644
--- a/src/System.CommandLine/System.CommandLine.csproj
+++ b/src/System.CommandLine/System.CommandLine.csproj
@@ -18,7 +18,7 @@
     <EnableSingleFileAnalyzer>true</EnableSingleFileAnalyzer>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(TargetFramework)' == 'net7.0'">
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net7.0' and '$(DotNetBuildFromSource)' != 'true'">
     <IsTrimmable>true</IsTrimmable>
     <EnableTrimAnalyzer>true</EnableTrimAnalyzer>
   </PropertyGroup>