diff --git a/Android.mk b/Android.mk
index 8233e5b..d31ad73 100644
--- a/Android.mk
+++ b/Android.mk
@@ -20,6 +20,7 @@
 LOCAL_JACK_COVERAGE_INCLUDE_FILTER := com.android.providers.contacts.*
 
 LOCAL_PACKAGE_NAME := ContactsProvider
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := shared
 LOCAL_PRIVILEGED_MODULE := true
 
diff --git a/tests/Android.mk b/tests/Android.mk
index 8df1d6d..539b436 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -16,6 +16,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := ContactsProviderTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_COMPATIBILITY_SUITE := device-tests
 
 LOCAL_INSTRUMENTATION_FOR := ContactsProvider
diff --git a/tests2/Android.mk b/tests2/Android.mk
index bb4443f..2662cfd 100644
--- a/tests2/Android.mk
+++ b/tests2/Android.mk
@@ -30,6 +30,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := ContactsProviderTests2
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_COMPATIBILITY_SUITE := device-tests
 
 LOCAL_INSTRUMENTATION_FOR := ContactsProvider