diff --git a/include/libopencm3/stm32/l4/exti.h b/include/libopencm3/stm32/l4/exti.h
index 627019dd..7ba30b2c 100644
--- a/include/libopencm3/stm32/l4/exti.h
+++ b/include/libopencm3/stm32/l4/exti.h
@@ -1,3 +1,13 @@
+/** @defgroup exti_defines EXTI Defines
+ *
+ * @ingroup STM32L4xx_defines
+ *
+ * @brief <b>Defined Constants and Types for the STM32L4xx EXTI Control</b>
+ *
+ * @version 1.0.0
+ *
+ * LGPL License Terms @ref lgpl_license
+ **/
 /*
  * This file is part of the libopencm3 project.
  *
diff --git a/lib/stm32/common/exti_common_all.c b/lib/stm32/common/exti_common_all.c
index a690ca26..7135a964 100644
--- a/lib/stm32/common/exti_common_all.c
+++ b/lib/stm32/common/exti_common_all.c
@@ -1,3 +1,6 @@
+/** @addtogroup exti_file EXTI peripheral API
+ * @ingroup peripheral_apis
+ */
 /*
  * This file is part of the libopencm3 project.
  *
diff --git a/lib/stm32/g0/exti.c b/lib/stm32/g0/exti.c
index 74b31f26..5a55583c 100644
--- a/lib/stm32/g0/exti.c
+++ b/lib/stm32/g0/exti.c
@@ -1,4 +1,4 @@
-/** @addtogroup exti_defines
+/** @addtogroup exti_file
  *
  * @author @htmlonly &copy; @endhtmlonly 2019 Guillaume Revaillot <g.revaillot@gmail.com>
  *