diff --git a/Android.mk b/Android.mk
index 083a73f..d93c06d 100644
--- a/Android.mk
+++ b/Android.mk
@@ -37,6 +37,8 @@ LOCAL_EXPORT_C_INCLUDE_DIRS := \
 LOCAL_MODULE := gralloc.gbm
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+
 include $(BUILD_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
@@ -46,4 +48,6 @@ LOCAL_EXPORT_C_INCLUDE_DIRS := \
 
 LOCAL_MODULE := libgralloc_drm
 LOCAL_MODULE_TAGS := optional
+LOCAL_PROPRIETARY_MODULE := true
+
 include $(BUILD_SHARED_LIBRARY)