diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 025c3a9..288297e 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -1091,4 +1091,6 @@
 void mbedtls_ssl_dtls_replay_reset( mbedtls_ssl_context *ssl );
 #endif
 
+void mbedtls_ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl );
+
 #endif /* ssl_internal.h */