diff --git a/boards/nucleo-l1/include/periph_conf.h b/boards/nucleo-l1/include/periph_conf.h
index 03dfc14740a50bc072a671c83a0054ca570cd755..409a8e1bc7309f5a4f04e7092450d068a832f39e 100644
--- a/boards/nucleo-l1/include/periph_conf.h
+++ b/boards/nucleo-l1/include/periph_conf.h
@@ -80,6 +80,7 @@ static const timer_conf_t timer_config[] = {
  * @{
  */
 #define RTC_NUMOF           (1U)
+/** @} */
 
 /**
  * @brief   UART configuration