diff --git a/eng/SourceBuild.props b/eng/SourceBuild.props
index 7dfc80d41fd14c..719b41326d4428 100644
--- a/eng/SourceBuild.props
+++ b/eng/SourceBuild.props
@@ -37,7 +37,7 @@
       <InnerBuildArgs>$(InnerBuildArgs) --arch $(TargetRidPlatform)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --configuration $(Configuration)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --ci</InnerBuildArgs>
-      <InnerBuildArgs>$(InnerBuildArgs) --allconfigurations</InnerBuildArgs>
+      <InnerBuildArgs Condition="'$(SourceBuildNonPortable)' == 'true'">$(InnerBuildArgs) --allconfigurations</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --verbosity $(LogVerbosity)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --nodereuse false</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) --warnAsError false</InnerBuildArgs>