diff --git a/library/ssl_tls13_invasive.h b/library/ssl_tls13_invasive.h
index 5470200..3fb79a9 100644
--- a/library/ssl_tls13_invasive.h
+++ b/library/ssl_tls13_invasive.h
@@ -25,9 +25,9 @@
 #include "psa/crypto.h"
 
 #if defined(MBEDTLS_TEST_HOOKS)
-int mbedtls_ssl_tls13_parse_certificate( mbedtls_ssl_context *ssl,
-                                         const unsigned char *buf,
-                                         const unsigned char *end );
+int mbedtls_ssl_tls13_parse_certificate(mbedtls_ssl_context *ssl,
+                                        const unsigned char *buf,
+                                        const unsigned char *end);
 #endif /* MBEDTLS_TEST_HOOKS */
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */