diff --git a/sysprop/Android.bp b/sysprop/Android.bp
index 540a8da..1d5eb31 100644
--- a/sysprop/Android.bp
+++ b/sysprop/Android.bp
@@ -14,6 +14,7 @@
     ],
     srcs: [
         "sysprop_library.go",
+        "testing.go",
     ],
     testSrcs: [
         "sysprop_test.go",
diff --git a/sysprop/sysprop_library.go b/sysprop/sysprop_library.go
index 892a16c..f1c2d0d 100644
--- a/sysprop/sysprop_library.go
+++ b/sysprop/sysprop_library.go
@@ -193,7 +193,11 @@
 }
 
 func init() {
-	android.RegisterModuleType("sysprop_library", syspropLibraryFactory)
+	registerSyspropBuildComponents(android.InitRegistrationContext)
+}
+
+func registerSyspropBuildComponents(ctx android.RegistrationContext) {
+	ctx.RegisterModuleType("sysprop_library", syspropLibraryFactory)
 }
 
 func (m *syspropLibrary) Name() string {
diff --git a/sysprop/testing.go b/sysprop/testing.go
new file mode 100644
index 0000000..3e14be1
--- /dev/null
+++ b/sysprop/testing.go
@@ -0,0 +1,19 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sysprop
+
+import "android/soong/android"
+
+var PrepareForTestWithSyspropBuildComponents = android.FixtureRegisterWithContext(registerSyspropBuildComponents)