diff --git a/java/android_resources.go b/java/android_resources.go
index 4d420cf..6864ebb 100644
--- a/java/android_resources.go
+++ b/java/android_resources.go
@@ -22,8 +22,11 @@
 )
 
 func init() {
-	android.RegisterPreSingletonType("overlay", OverlaySingletonFactory)
+	registerOverlayBuildComponents(android.InitRegistrationContext)
+}
 
+func registerOverlayBuildComponents(ctx android.RegistrationContext) {
+	ctx.RegisterPreSingletonType("overlay", OverlaySingletonFactory)
 }
 
 var androidResourceIgnoreFilenames = []string{
diff --git a/java/java_test.go b/java/java_test.go
index 913ed87..6bebf37 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -71,11 +71,11 @@
 	cc.PrepareForTestWithCcBuildComponents,
 	// Include all the default java modules.
 	PrepareForTestWithJavaDefaultModules,
+	PrepareForTestWithOverlayBuildComponents,
 	python.PrepareForTestWithPythonBuildComponents,
 	android.FixtureRegisterWithContext(func(ctx android.RegistrationContext) {
 		ctx.RegisterModuleType("java_plugin", PluginFactory)
 
-		ctx.RegisterPreSingletonType("overlay", OverlaySingletonFactory)
 		ctx.RegisterPreSingletonType("sdk_versions", sdkPreSingletonFactory)
 	}),
 	dexpreopt.PrepareForTestWithDexpreopt,
diff --git a/java/testing.go b/java/testing.go
index 4b8b849..2343294 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -54,6 +54,8 @@
 	android.FixtureAddTextFile(defaultJavaDir+"/Android.bp", GatherRequiredDepsForTest()),
 )
 
+var PrepareForTestWithOverlayBuildComponents = android.FixtureRegisterWithContext(registerOverlayBuildComponents)
+
 // Prepare a fixture to use all java module types, mutators and singletons fully.
 //
 // This should only be used by tests that want to run with as much of the build enabled as possible.