diff --git a/cpu/samd5x/include/candev_samd5x.h b/cpu/samd5x/include/candev_samd5x.h
index b9d62dbe83d4..3e065f93d8cf 100644
--- a/cpu/samd5x/include/candev_samd5x.h
+++ b/cpu/samd5x/include/candev_samd5x.h
@@ -152,5 +152,10 @@ void candev_samd5x_enter_sleep_mode(candev_t *candev);
 void candev_samd5x_exit_sleep_mode(candev_t *candev);
 
 #endif /* CAN_INST_NUM */
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* CANDEV_SAMD5X_H */
 /** @} */