diff --git a/include/libopencm3/stm32/f7/flash.h b/include/libopencm3/stm32/f7/flash.h
index d9af802c..f5e68d7a 100644
--- a/include/libopencm3/stm32/f7/flash.h
+++ b/include/libopencm3/stm32/f7/flash.h
@@ -1,7 +1,6 @@
-#ifndef LIBOPENCM3_FLASH_H
-#define LIBOPENCM3_FLASH_H
-
-/** @addtogroup flash_defines
+/** @defgroup flash_defines FLASH Defines
+ *
+ * @ingroup STM32F7xx_defines
  *
  * @author @htmlonly © @endhtmlonly 2017
  * Matthew Lai <m@matthewlai.ca>
@@ -32,6 +31,9 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifndef LIBOPENCM3_FLASH_H
+#define LIBOPENCM3_FLASH_H
+
 #include <libopencm3/stm32/common/flash_common_all.h>
 #include <libopencm3/stm32/common/flash_common_f.h>
 #include <libopencm3/stm32/common/flash_common_f24.h>