diff --git a/eng/SourceBuild.props b/eng/SourceBuild.props
index 0c1fe5314ff36b..c9ac54d245a8bd 100644
--- a/eng/SourceBuild.props
+++ b/eng/SourceBuild.props
@@ -40,7 +40,6 @@
       <InnerBuildArgs>$(InnerBuildArgs) --verbosity $(LogVerbosity)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --nodereuse false</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --warnAsError false</InnerBuildArgs>
-      <InnerBuildArgs>$(InnerBuildArgs) --cmakeargs -DCLR_CMAKE_USE_SYSTEM_LIBUNWIND=TRUE</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) /p:MicrosoftNetFrameworkReferenceAssembliesVersion=1.0.0</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) /p:PackageRid=$(TargetRid)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) /p:NoPgoOptimize=true</InnerBuildArgs>