diff --git a/src/libImaging/Arrow.h b/src/libImaging/Arrow.h
index 0b285fe8053..c8813bab062 100644
--- a/src/libImaging/Arrow.h
+++ b/src/libImaging/Arrow.h
@@ -1,9 +1,26 @@
 #include <stdint.h>
 #include <assert.h>
 
-// Apache License 2.0.
-// Source apache arrow project
-// https://arrow.apache.org/docs/format/CDataInterface.html
+// 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.
+
+// Vendored from
+// https://arrow.apache.org/docs/format/CDataInterface.html#structure-definitions
+// Only the Arrow C Data Interface structs and flags are included.
 
 #ifndef ARROW_C_DATA_INTERFACE
 #define ARROW_C_DATA_INTERFACE