diff --git a/hello_world/Android.mk b/hello_world/Android.mk
new file mode 100644
index 0000000..5c019b3
--- /dev/null
+++ b/hello_world/Android.mk
@@ -0,0 +1,20 @@
+###################### optee-hello-world ######################
+LOCAL_PATH := $(call my-dir)
+
+OPTEE_CLIENT_EXPORT = $(LOCAL_PATH)/../../optee_client/out/export
+
+include $(CLEAR_VARS)
+LOCAL_CFLAGS += -DANDROID_BUILD
+LOCAL_CFLAGS += -Wall
+
+LOCAL_SRC_FILES += host/main.c
+
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/ta/include \
+		$(OPTEE_CLIENT_EXPORT)/include \
+
+LOCAL_SHARED_LIBRARIES := libteec
+LOCAL_MODULE := tee_example_helloworld
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)
+
+include $(LOCAL_PATH)/ta/Android.mk