diff --git a/lib/zlib/tf_gunzip.c b/lib/zlib/tf_gunzip.c
index 3ac80bc..8b8d14d 100644
--- a/lib/zlib/tf_gunzip.c
+++ b/lib/zlib/tf_gunzip.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2021, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
diff --git a/lib/zlib/zlib.mk b/lib/zlib/zlib.mk
index 98d4efa..a8937a7 100644
--- a/lib/zlib/zlib.mk
+++ b/lib/zlib/zlib.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018, Arm Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #