diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 77325c3..d018bee 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -16,7 +16,7 @@
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  *
- *  This file is part of mbed TLS ( https://tls.mbed.org )
+ *  This file is part of Mbed TLS ( https://tls.mbed.org )
  */
 
 #include "common.h"