diff --git a/examples/stm32/nucleo-h743zi-make-baremetal-builtin/syscalls.c b/examples/stm32/nucleo-h743zi-make-baremetal-builtin/syscalls.c
index ac27f093..6fef1007 100644
--- a/examples/stm32/nucleo-h743zi-make-baremetal-builtin/syscalls.c
+++ b/examples/stm32/nucleo-h743zi-make-baremetal-builtin/syscalls.c
@@ -86,3 +86,13 @@ int mkdir(const char *path, mode_t mode) {
 }
 
 void _init(void) {}
+
+extern uint64_t mg_now(void);
+
+int _gettimeofday(struct timeval *tv, void *tz) {
+  uint64_t now = mg_now();
+  (void) tz;
+  tv->tv_sec = (time_t) (now / 1000);
+  tv->tv_usec = (unsigned long) ((now % 1000) * 1000);
+  return 0;
+}
diff --git a/mongoose.c b/mongoose.c
index f29373cc..0bf4122c 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -5774,6 +5774,7 @@ void mg_tls_ctx_free(struct mg_mgr *mgr) {
     mbedtls_x509_crt_free(&ctx->client_cert);
     mbedtls_pk_free(&ctx->client_key);
     mbedtls_x509_crt_free(&ctx->client_ca);
+    mbedtls_x509_crt_free(&ctx->server_ca);
 #ifdef MBEDTLS_SSL_SESSION_TICKETS
     mbedtls_ssl_ticket_free(&ctx->ticket_ctx);
 #endif
diff --git a/src/tls_mbed.c b/src/tls_mbed.c
index 2d6d7232..38f0ba77 100644
--- a/src/tls_mbed.c
+++ b/src/tls_mbed.c
@@ -241,6 +241,7 @@ void mg_tls_ctx_free(struct mg_mgr *mgr) {
     mbedtls_x509_crt_free(&ctx->client_cert);
     mbedtls_pk_free(&ctx->client_key);
     mbedtls_x509_crt_free(&ctx->client_ca);
+    mbedtls_x509_crt_free(&ctx->server_ca);
 #ifdef MBEDTLS_SSL_SESSION_TICKETS
     mbedtls_ssl_ticket_free(&ctx->ticket_ctx);
 #endif