diff --git a/sdk/testing.go b/sdk/testing.go
index 34ea8f0..b53558d 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -97,6 +97,11 @@
 	ctx.PreArchMutators(android.RegisterVisibilityRuleChecker)
 	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
 	ctx.PreArchMutators(android.RegisterComponentsMutator)
+
+	android.RegisterPrebuiltMutators(ctx)
+
+	// Register these after the prebuilt mutators have been registered to match what
+	// happens at runtime.
 	ctx.PreArchMutators(android.RegisterVisibilityRuleGatherer)
 	ctx.PostDepsMutators(android.RegisterVisibilityRuleEnforcer)