diff --git a/Android.mk b/Android.mk
index 084aea4..8d3c7b4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -6,6 +6,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := DownloadProvider
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := media
 LOCAL_PRIVILEGED_MODULE := true
 LOCAL_STATIC_JAVA_LIBRARIES := guava
diff --git a/tests/Android.mk b/tests/Android.mk
index b654e12..43cbafb 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -13,6 +13,7 @@
     mockito-target \
     legacy-android-test
 LOCAL_PACKAGE_NAME := DownloadProviderTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_COMPATIBILITY_SUITE := device-tests
 LOCAL_CERTIFICATE := media
 
diff --git a/tests/permission/Android.mk b/tests/permission/Android.mk
index 62f4d02..b3658df 100644
--- a/tests/permission/Android.mk
+++ b/tests/permission/Android.mk
@@ -10,6 +10,7 @@
 LOCAL_JAVA_LIBRARIES := android.test.runner
 LOCAL_STATIC_JAVA_LIBRARIES := junit legacy-android-test
 LOCAL_PACKAGE_NAME := DownloadProviderPermissionTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 
 include $(BUILD_PACKAGE)
 
diff --git a/tests/public_api_access/Android.mk b/tests/public_api_access/Android.mk
index 66f2f10..39f3c79 100644
--- a/tests/public_api_access/Android.mk
+++ b/tests/public_api_access/Android.mk
@@ -10,6 +10,7 @@
 LOCAL_JAVA_LIBRARIES := android.test.runner
 LOCAL_STATIC_JAVA_LIBRARIES := junit legacy-android-test
 LOCAL_PACKAGE_NAME := DownloadPublicApiAccessTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 
 include $(BUILD_PACKAGE)
 
diff --git a/ui/Android.mk b/ui/Android.mk
index 9a54555..0768a30 100644
--- a/ui/Android.mk
+++ b/ui/Android.mk
@@ -10,6 +10,7 @@
     ../src/com/android/providers/downloads/RawDocumentsHelper.java
 
 LOCAL_PACKAGE_NAME := DownloadProviderUi
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := media
 
 include $(BUILD_PACKAGE)