diff --git a/crypto/kdf/hkdf.c b/crypto/kdf/hkdf.c
index ae46fad609..dc2ead66b1 100644
--- a/crypto/kdf/hkdf.c
+++ b/crypto/kdf/hkdf.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
diff --git a/crypto/kdf/kdf_err.c b/crypto/kdf/kdf_err.c
index 1627c0a394..92e6a0c754 100644
--- a/crypto/kdf/kdf_err.c
+++ b/crypto/kdf/kdf_err.c
@@ -2,7 +2,7 @@
  * Generated by util/mkerr.pl DO NOT EDIT
  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
diff --git a/crypto/kdf/scrypt.c b/crypto/kdf/scrypt.c
index 61fd390e95..6b35b77fd9 100644
--- a/crypto/kdf/scrypt.c
+++ b/crypto/kdf/scrypt.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
diff --git a/crypto/kdf/tls1_prf.c b/crypto/kdf/tls1_prf.c
index 49f7ecced9..c3be7dd150 100644
--- a/crypto/kdf/tls1_prf.c
+++ b/crypto/kdf/tls1_prf.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html