diff --git a/Android.mk b/Android.mk
index 888404c..1711bfd 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,3 +1,18 @@
+# -*- mode: makefile -*-
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/output_data/Android.mk b/output_data/Android.mk
index 888404c..1711bfd 100644
--- a/output_data/Android.mk
+++ b/output_data/Android.mk
@@ -1,3 +1,18 @@
+# -*- mode: makefile -*-
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/output_data/android/Android.mk b/output_data/android/Android.mk
index 10f3caa..178454a 100644
--- a/output_data/android/Android.mk
+++ b/output_data/android/Android.mk
@@ -1,8 +1,22 @@
+# -*- mode: makefile -*-
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 LOCAL_PATH:= $(call my-dir)
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := tzlookup.xml
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_TAGS := optional
@@ -16,7 +30,6 @@
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := tzlookup.xml
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_IS_HOST_MODULE := true
 LOCAL_SRC_FILES := tzlookup.xml
 LOCAL_MODULE_CLASS := ETC
diff --git a/output_data/iana/Android.mk b/output_data/iana/Android.mk
index 5aafd17..a6b55f6 100644
--- a/output_data/iana/Android.mk
+++ b/output_data/iana/Android.mk
@@ -1,8 +1,22 @@
+# -*- mode: makefile -*-
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 LOCAL_PATH:= $(call my-dir)
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := tzdata
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_TAGS := optional
@@ -16,7 +30,6 @@
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := tzdata
-LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_IS_HOST_MODULE := true
 LOCAL_SRC_FILES := tzdata
 LOCAL_MODULE_CLASS := ETC