diff --git a/Android.mk b/Android.mk
index 79ef194..5b483c4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -13,6 +13,7 @@
 LOCAL_PROTO_JAVA_OUTPUT_PARAMS := optional_field_style=accessors
 
 LOCAL_PACKAGE_NAME := Telecom
+LOCAL_PRIVATE_PLATFORM_APIS := true
 
 LOCAL_CERTIFICATE := platform
 LOCAL_PRIVILEGED_MODULE := true
diff --git a/testapps/Android.mk b/testapps/Android.mk
index 74928d0..b600dca 100644
--- a/testapps/Android.mk
+++ b/testapps/Android.mk
@@ -25,6 +25,7 @@
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := TelecomTestApps
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := platform
 
 LOCAL_MODULE_TAGS := tests
diff --git a/tests/Android.mk b/tests/Android.mk
index 74bca5e..c2db42a 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -54,6 +54,7 @@
 LOCAL_PROGUARD_ENABLED := disabled
 
 LOCAL_PACKAGE_NAME := TelecomUnitTests
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := platform
 
 LOCAL_MODULE_TAGS := tests