diff --git a/tests/translate_ciphers.py b/tests/translate_ciphers.py
index b9a2d53..07affb2 100755
--- a/tests/translate_ciphers.py
+++ b/tests/translate_ciphers.py
@@ -1,3 +1,34 @@
+#!/usr/bin/env python3
+
+# translate_ciphers.py
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+#
+# Purpose
+#
+# Translate ciphersuite names in MBedTLS format to OpenSSL and GNU
+# standards.
+#
+# Format and analyse strings past in via input arguments to match
+# the expected strings utilised in compat.sh.
+#
+# sys.argv[1] should be "g" or "o" for GNU or OpenSSL.
+# sys.argv[2] should be a string containing one or more
+# ciphersuite names.
+
 import re
 import sys
 
@@ -91,8 +122,8 @@
     elif sys.argv[1] == "o":
         print(format_o(sys.argv[2]))
         exit(0)
-    else: 
+    else:
         exit(1)
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()