diff --git a/android/hooks.go b/android/hooks.go
index 6b2468d..d55678e 100644
--- a/android/hooks.go
+++ b/android/hooks.go
@@ -123,6 +123,10 @@
 	install []func(InstallHookContext)
 }
 
+func registerLoadHookMutator(ctx RegisterMutatorsContext) {
+	ctx.TopDown("load_hooks", LoadHookMutator).Parallel()
+}
+
 func LoadHookMutator(ctx TopDownMutatorContext) {
 	if m, ok := ctx.Module().(Module); ok {
 		// Cast through *androidTopDownMutatorContext because AppendProperties is implemented
diff --git a/android/mutator.go b/android/mutator.go
index 71237a1..5ce743a 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -73,9 +73,7 @@
 type RegisterMutatorFunc func(RegisterMutatorsContext)
 
 var preArch = []RegisterMutatorFunc{
-	func(ctx RegisterMutatorsContext) {
-		ctx.TopDown("load_hooks", LoadHookMutator).Parallel()
-	},
+	registerLoadHookMutator,
 	RegisterNamespaceMutator,
 	RegisterPrebuiltsPreArchMutators,
 	RegisterDefaultsPreArchMutators,
diff --git a/android/testing.go b/android/testing.go
index 0ec5af5..aee6855 100644
--- a/android/testing.go
+++ b/android/testing.go
@@ -37,6 +37,8 @@
 
 	ctx.SetNameInterface(nameResolver)
 
+	ctx.preArch = append(ctx.preArch, registerLoadHookMutator)
+
 	ctx.postDeps = append(ctx.postDeps, registerPathDepsMutator)
 
 	return ctx