diff --git a/c/set-protocol/ports/stm32f407-devboard-v1/set_devboard_v1_stm32f407.c b/c/set-protocol/ports/stm32f407-devboard-v1/set_devboard_v1_stm32f407.c
index af72ac5..2566f87 100644
--- a/c/set-protocol/ports/stm32f407-devboard-v1/set_devboard_v1_stm32f407.c
+++ b/c/set-protocol/ports/stm32f407-devboard-v1/set_devboard_v1_stm32f407.c
@@ -33,10 +33,12 @@ bool set_devboard_v1_stm32f407_init(
     if ((port == NULL) || (can == NULL)) {
         return false;
     }
-    *port = (set_devboard_v1_stm32f407_t){0};
     port->can = can;
     port->unhandled = unhandled;
     port->unhandled_user = unhandled_user;
+    port->rx_frames = 0U;
+    port->tx_frames = 0U;
+    port->tx_errors = 0U;
     return pcan_modbus_server_init(&port->server, device_type, device_id,
                                    read, write, register_user);
 }