diff --git a/include/libopencm3/stm32/f4/rcc.h b/include/libopencm3/stm32/f4/rcc.h
index 0062264b..8e39f064 100644
--- a/include/libopencm3/stm32/f4/rcc.h
+++ b/include/libopencm3/stm32/f4/rcc.h
@@ -19,7 +19,7 @@
  * @date 18 August 2012
  *
  * LGPL License Terms @ref lgpl_license
- *  */
+ */
 /*
  * This file is part of the libopencm3 project.
  *
@@ -49,7 +49,6 @@
 #include <libopencm3/stm32/pwr.h>
 
 /** @defgroup rcc_registers RCC Registers
- * @ingroup rcc_defines
  * @brief Reset / Clock Control Registers
 @{*/
 /** Clock control register */
@@ -117,7 +116,7 @@
 #define RCC_CKGATENR				MMIO32(RCC_BASE + 0x90)
 /** RCC Dedicated Clocks Configuration Register 2 */
 #define RCC_DCKCFGR2				MMIO32(RCC_BASE + 0x94)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_cr_values RCC_CR values
  * @ingroup rcc_registers
@@ -139,7 +138,7 @@
 #define RCC_CR_HSITRIM_MASK			0x1f
 #define RCC_CR_HSIRDY				(1 << 1)
 #define RCC_CR_HSION				(1 << 0)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_pllcfgr_values RCC_PLLCFGR values
  * @ingroup rcc_registers
@@ -161,7 +160,7 @@
 /* PLLM: [5:0] */
 #define RCC_PLLCFGR_PLLM_SHIFT			0
 #define RCC_PLLCFGR_PLLM_MASK			0x3f
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_cfgr_values RCC_CFGR values
  * @ingroup rcc_registers
@@ -243,7 +242,7 @@
 #define RCC_CFGR_SW_HSI				0x0
 #define RCC_CFGR_SW_HSE				0x1
 #define RCC_CFGR_SW_PLL				0x2
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_cir_values RCC_CIR values
  * @ingroup rcc_registers
@@ -281,7 +280,7 @@
 #define RCC_CIR_HSIRDYF				(1 << 2)
 #define RCC_CIR_LSERDYF				(1 << 1)
 #define RCC_CIR_LSIRDYF				(1 << 0)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_ahbrstr_rst RCC_AHBxRSTR reset values (full set)
 @{*/
@@ -416,6 +415,7 @@
 #define RCC_AHB1ENR_GPIOCEN			(1 << 2)
 #define RCC_AHB1ENR_GPIOBEN			(1 << 1)
 #define RCC_AHB1ENR_GPIOAEN			(1 << 0)
+/**@}*/
 
 /** @addtogroup deprecated_201802_rcc Deprecated 2018
  * @deprecated replace zzz_IOPxEN with zzz_GPIOxEN
@@ -566,6 +566,8 @@
 
 /* --- RCC_APB1LPENR values ------------------------------------------------- */
 
+/** @defgroup rcc_apblpenr_en RCC_APBxLPENR enable values (full set)
+@{*/
 #define RCC_APB1LPENR_UART8EN			(1 << 31)
 #define RCC_APB1LPENR_UART7EN			(1 << 30)
 #define RCC_APB1LPENR_DACLPEN			(1 << 29)
@@ -612,7 +614,7 @@
 #define RCC_APB2LPENR_USART1LPEN		(1 << 4)
 #define RCC_APB2LPENR_TIM8LPEN			(1 << 1)
 #define RCC_APB2LPENR_TIM1LPEN			(1 << 0)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_bdcr_values RCC_BDCR values
  * @ingroup rcc_registers
@@ -631,7 +633,7 @@
 #define RCC_BDCR_LSEBYP				(1 << 2)
 #define RCC_BDCR_LSERDY				(1 << 1)
 #define RCC_BDCR_LSEON				(1 << 0)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_csr_values RCC_CSR values
  * @ingroup rcc_registers
@@ -650,7 +652,7 @@
 		RCC_CSR_PINRSTF | RCC_CSR_BORRSTF)
 #define RCC_CSR_LSIRDY				(1 << 1)
 #define RCC_CSR_LSION				(1 << 0)
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_sscgr_values RCC_SSCGR values
  * @ingroup rcc_registers
@@ -666,7 +668,7 @@
 /* RCC_SSCGR[15:0]: MODPER */
 #define RCC_SSCGR_MODPER_SHIFT			0
 #define RCC_SSCGR_MODPER_MASK			0x1fff
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_pllded_values RCC_PLLxxx/DCKy values
  * @ingroup rcc_registers
@@ -741,7 +743,7 @@
 
 #define RCC_DCKCFGR_PLLI2SDIVQ_SHIFT		0
 #define RCC_DCKCFGR_PLLI2SDIVQ_MASK		0x1f
-/*@}*/
+/**@}*/
 
 /** @defgroup rcc_ckgatenr_values RCC_CKGATENR bits
  * @ingroup rcc_registers
@@ -755,7 +757,7 @@
 #define RCC_CKGATENR_CM4DBG_CKEN		(1<<2)
 #define RCC_CKGATENR_AHB2APB2_CKEN		(1<<1)
 #define RCC_CKGATENR_AHB2APB1_CKEN		(1<<0)
-/*@}*/
+/**@}*/
 
 /* --- Variable definitions ------------------------------------------------ */
 extern uint32_t rcc_ahb_frequency;
@@ -1101,3 +1103,4 @@ void __attribute__((deprecated("Use rcc_clock_setup_pll as direct replacement"))
 END_DECLS
 
 #endif
+/**@}*/
\ No newline at end of file