diff --git a/dotnet/targets/Xamarin.Shared.Sdk.targets b/dotnet/targets/Xamarin.Shared.Sdk.targets
index bf53cf109f28..6282da65f228 100644
--- a/dotnet/targets/Xamarin.Shared.Sdk.targets
+++ b/dotnet/targets/Xamarin.Shared.Sdk.targets
@@ -484,6 +484,7 @@
 				XamarinRuntime=$(_XamarinRuntime)
 			</_CustomLinkerOptions>
 			<_ExtraTrimmerArgs>$(_ExtraTrimmerArgs) --custom-data "LinkerOptionsFile=$(_CustomLinkerOptionsFile)"</_ExtraTrimmerArgs>
+			<_ExtraTrimmerArgs Condition="'$(TrimMode)' == 'copy' And '$(MarkCopiedAssemblies)' != 'true'">$(_ExtraTrimmerArgs) --custom-data DisableMarkingOfCopyAssemblies=true</_ExtraTrimmerArgs>
 
 			<!-- Verbose output, so that we get something to stdout when something goes wrong -->
 			<_ExtraTrimmerArgs>$(_ExtraTrimmerArgs) --verbose</_ExtraTrimmerArgs>