--- a/tests/benchmarks/MicroPerf/MicroPerf.fsproj
+++ b/tests/benchmarks/MicroPerf/MicroPerf.fsproj
@@ -9,6 +9,7 @@
     <OtherFlags>$(OtherFlags) --nowarn:57</OtherFlags>
     <OtherFlags>$(OtherFlags) --langversion:preview</OtherFlags>
     <OtherFlags>$(OtherFlags) --define:PREVIEW</OtherFlags>
+    <UseAppHost>false</UseAppHost>
     <!-- By default this project will compile with the proto compiler -->
     <!-- Uncommenting this will build with a previous installed compiler  -->
     <!--
--- a/tests/benchmarks/TaskPerf/TaskPerf.fsproj
+++ b/tests/benchmarks/TaskPerf/TaskPerf.fsproj
@@ -4,6 +4,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
+    <UseAppHost>false</UseAppHost>
     <!-- Turn off "This function is for use by compiled F# code and should not be used directly" -->
 	<OtherFlags>$(OtherFlags) --nowarn:1204</OtherFlags>
     <!-- Turn off "Experimental" -->