diff --git a/build/config/libpfm4.sh b/build/config/libpfm4.sh
index a3d493d0..da834b64 100644
--- a/build/config/libpfm4.sh
+++ b/build/config/libpfm4.sh
@@ -1,3 +1,17 @@
+# Copyright 2020 Google Inc. All rights reserved.
+#
+# 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.
+
 export GO_FLAGS="-tags=libpfm,netgo -race"
 export PACKAGES="sudo libpfm4"
 export BUILD_PACKAGES="libpfm4 libpfm4-dev"
diff --git a/build/config/plain.sh b/build/config/plain.sh
index e69de29b..17950d5f 100644
--- a/build/config/plain.sh
+++ b/build/config/plain.sh
@@ -0,0 +1,15 @@
+# Copyright 2020 Google Inc. All rights reserved.
+#
+# 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.
+
+# Nothing happens here, this is just default config.
\ No newline at end of file