diff --git a/Android.mk b/Android.mk
index c59d938..cb856ce 100644
--- a/Android.mk
+++ b/Android.mk
@@ -12,6 +12,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_PACKAGE_NAME := Settings
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := platform
 LOCAL_PRIVILEGED_MODULE := true
 LOCAL_MODULE_TAGS := optional
diff --git a/tests/anomaly-tester/Android.mk b/tests/anomaly-tester/Android.mk
index ade37db..5d48ca8 100644
--- a/tests/anomaly-tester/Android.mk
+++ b/tests/anomaly-tester/Android.mk
@@ -17,6 +17,7 @@
 LOCAL_PROGUARD_ENABLED := disabled
 
 LOCAL_PACKAGE_NAME := AnomalyTester
+LOCAL_PRIVATE_PLATFORM_APIS := true
 
 LOCAL_INSTRUMENTATION_FOR := Settings
 
diff --git a/tests/unit/Android.mk b/tests/unit/Android.mk
index 060c3e1..ca7b1cd 100644
--- a/tests/unit/Android.mk
+++ b/tests/unit/Android.mk
@@ -20,6 +20,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := SettingsUnitTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_COMPATIBILITY_SUITE := device-tests
 
 LOCAL_INSTRUMENTATION_FOR := Settings