diff --git a/eng/DotNetBuild.props b/eng/DotNetBuild.props
index 26ee228da3e181..6e29b64f9a422d 100644
--- a/eng/DotNetBuild.props
+++ b/eng/DotNetBuild.props
@@ -54,7 +54,7 @@
       <InnerBuildArgs>$(InnerBuildArgs) $(FlagParameterPrefix)verbosity $(LogVerbosity)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) $(FlagParameterPrefix)nodereuse $(ArcadeFalseBoolBuildArg)</InnerBuildArgs>
       <InnerBuildArgs>$(InnerBuildArgs) $(FlagParameterPrefix)warnAsError $(ArcadeFalseBoolBuildArg)</InnerBuildArgs>
-      <InnerBuildArgs Condition="'$(SourceBuildUseMonoRuntime)' == 'true'">$(InnerBuildArgs) $(FlagParameterPrefix)usemonoruntime</InnerBuildArgs>
+      <InnerBuildArgs Condition="'$(DotNetBuildUseMonoRuntime)' == 'true'">$(InnerBuildArgs) $(FlagParameterPrefix)usemonoruntime</InnerBuildArgs>
       <!-- TODO: This parameter is only available on the Unix script. Intentional? -->
       <InnerBuildArgs Condition="'$(OS)' != 'Windows_NT'">$(InnerBuildArgs) --outputrid $(TargetRid)</InnerBuildArgs>
       <!-- PackageOS and ToolsOS control the rids of prebuilts consumed by the build.