diff --git a/lib/stm32/common/timer_common_all.c b/lib/stm32/common/timer_common_all.c
index b9512f5b..64701836 100644
--- a/lib/stm32/common/timer_common_all.c
+++ b/lib/stm32/common/timer_common_all.c
@@ -1,4 +1,4 @@
-/** @addtogroup timer_file Timer peripheral API
+/** @addtogroup timer_file TIMER peripheral API
 @ingroup peripheral_apis
 
 @author @htmlonly © @endhtmlonly 2010
diff --git a/lib/stm32/f0/flash.c b/lib/stm32/f0/flash.c
index 9e7ebc33..d594a5e6 100644
--- a/lib/stm32/f0/flash.c
+++ b/lib/stm32/f0/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f0/rcc.c b/lib/stm32/f0/rcc.c
index a0e859b5..cc52fad3 100644
--- a/lib/stm32/f0/rcc.c
+++ b/lib/stm32/f0/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f1/flash.c b/lib/stm32/f1/flash.c
index 8c8c6e5f..c990b1e6 100644
--- a/lib/stm32/f1/flash.c
+++ b/lib/stm32/f1/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f1/rcc.c b/lib/stm32/f1/rcc.c
index f09fbc0f..9d01881a 100644
--- a/lib/stm32/f1/rcc.c
+++ b/lib/stm32/f1/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
 
 @ingroup peripheral_apis
 
diff --git a/lib/stm32/f1/timer.c b/lib/stm32/f1/timer.c
index b04bd971..6640d6f3 100644
--- a/lib/stm32/f1/timer.c
+++ b/lib/stm32/f1/timer.c
@@ -1,4 +1,4 @@
-/** @defgroup timer_file
+/** @defgroup timer_file TIMER peripheral API
 @ingroup peripheral_apis
 @brief <b>libopencm3 STM32F1xx Timers</b>
 
diff --git a/lib/stm32/f2/flash.c b/lib/stm32/f2/flash.c
index 0744ba5b..958e62a9 100644
--- a/lib/stm32/f2/flash.c
+++ b/lib/stm32/f2/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f2/rcc.c b/lib/stm32/f2/rcc.c
index 3b3c73f6..e530de47 100644
--- a/lib/stm32/f2/rcc.c
+++ b/lib/stm32/f2/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f3/flash.c b/lib/stm32/f3/flash.c
index e987d374..7d73ce62 100644
--- a/lib/stm32/f3/flash.c
+++ b/lib/stm32/f3/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f3/rcc.c b/lib/stm32/f3/rcc.c
index 2a3d2150..3e1852bf 100644
--- a/lib/stm32/f3/rcc.c
+++ b/lib/stm32/f3/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f4/flash.c b/lib/stm32/f4/flash.c
index 75407d0d..93cef9f3 100644
--- a/lib/stm32/f4/flash.c
+++ b/lib/stm32/f4/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f4/pwr.c b/lib/stm32/f4/pwr.c
index 9bd2f8da..0d0c2d2d 100644
--- a/lib/stm32/f4/pwr.c
+++ b/lib/stm32/f4/pwr.c
@@ -1,4 +1,4 @@
-/** @defgroup pwr_file
+/** @defgroup pwr_file PWR peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f4/rcc.c b/lib/stm32/f4/rcc.c
index 74778410..66c3d4a1 100644
--- a/lib/stm32/f4/rcc.c
+++ b/lib/stm32/f4/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f4/rtc.c b/lib/stm32/f4/rtc.c
index 4d1008c1..847fb55b 100644
--- a/lib/stm32/f4/rtc.c
+++ b/lib/stm32/f4/rtc.c
@@ -1,4 +1,4 @@
-/** @defgroup rtc_file
+/** @defgroup rtc_file RTC peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/f7/flash.c b/lib/stm32/f7/flash.c
index 341a32f2..82dcf4f3 100644
--- a/lib/stm32/f7/flash.c
+++ b/lib/stm32/f7/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  */
diff --git a/lib/stm32/f7/rcc.c b/lib/stm32/f7/rcc.c
index 64b27427..7abdd770 100644
--- a/lib/stm32/f7/rcc.c
+++ b/lib/stm32/f7/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
  *
  * @ingroup peripheral_apis
  * This library supports the Reset and Clock Control System in the STM32 series
diff --git a/lib/stm32/g0/flash.c b/lib/stm32/g0/flash.c
index bb19d598..74ecf5d0 100644
--- a/lib/stm32/g0/flash.c
+++ b/lib/stm32/g0/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/l1/flash.c b/lib/stm32/l1/flash.c
index 416b4efc..dfd90d25 100644
--- a/lib/stm32/l1/flash.c
+++ b/lib/stm32/l1/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *
diff --git a/lib/stm32/l1/rcc.c b/lib/stm32/l1/rcc.c
index 6d4ddfa7..44eac07b 100644
--- a/lib/stm32/l1/rcc.c
+++ b/lib/stm32/l1/rcc.c
@@ -1,4 +1,4 @@
-/** @defgroup rcc_file RCC Peripheral API
+/** @defgroup rcc_file RCC peripheral API
 
 @ingroup peripheral_apis
 
diff --git a/lib/stm32/l1/timer.c b/lib/stm32/l1/timer.c
index f9ce5dd0..fa701dd1 100644
--- a/lib/stm32/l1/timer.c
+++ b/lib/stm32/l1/timer.c
@@ -1,4 +1,4 @@
-/** @defgroup timer_file
+/** @defgroup timer_file TIMER peripheral API
 @ingroup peripheral_apis
 @brief <b>libopencm3 STM32L1xx Timers</b>
 
diff --git a/lib/stm32/l4/flash.c b/lib/stm32/l4/flash.c
index 2aff56a6..16007ee6 100644
--- a/lib/stm32/l4/flash.c
+++ b/lib/stm32/l4/flash.c
@@ -1,4 +1,4 @@
-/** @defgroup flash_file
+/** @defgroup flash_file FLASH peripheral API
  *
  * @ingroup peripheral_apis
  *