diff --git a/contrib/fb303/configure.ac b/contrib/fb303/configure.ac
index 3e562b0..67cc110 100644
--- a/contrib/fb303/configure.ac
+++ b/contrib/fb303/configure.ac
@@ -4,6 +4,25 @@
 # AC - autoconf
 # FB - facebook
 
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
 #########################################################################
 # DO NOT TOUCH EXCEPT TO CHANGE REV# IN AC_INIT