diff --git a/src/linker/Linker.Steps/MarkStep.cs b/src/linker/Linker.Steps/MarkStep.cs
index 524c9195e300..4921299ef311 100644
--- a/src/linker/Linker.Steps/MarkStep.cs
+++ b/src/linker/Linker.Steps/MarkStep.cs
@@ -1387,7 +1387,9 @@ protected void MarkAssembly (AssemblyDefinition assembly, DependencyInfo reason)
 			MarkExportedTypesTarget.ProcessAssembly (assembly, Context);
 
 			if (ProcessReferencesStep.IsFullyPreservedAction (Context.Annotations.GetAction (assembly))) {
-				MarkEntireAssembly (assembly);
+				if (!Context.TryGetCustomData ("DisableMarkingOfCopyAssemblies", out string? disableMarkingOfCopyAssembliesValue) ||
+					disableMarkingOfCopyAssembliesValue != "true")
+					MarkEntireAssembly (assembly);
 				return;
 			}