diff --git a/lib/stm32/common/hash_common_f24.c b/lib/stm32/common/hash_common_f24.c
index 24d489c1..b5046dd8 100644
--- a/lib/stm32/common/hash_common_f24.c
+++ b/lib/stm32/common/hash_common_f24.c
@@ -1,4 +1,6 @@
-/** @addtogroup hash_file
+/** @addtogroup hash_file HASH Peripheral API
+ *
+ * @ingroup peripheral_apis
  *
  * @author @htmlonly © @endhtmlonly 2013
  * Mikhail Avkhimenia <mikhail@avkhimenia.net>
@@ -145,7 +147,6 @@ void hash_digest()
 Makes a copy of the resulting hash.
 
 @param[out] data unsigned int32. Hash 4\5 words long depending on the algorithm.
-@param[in] algorithm unsigned int8. Hash algorithm: @ref hash_algorithm
 */
 
 void hash_get_result(uint32_t *data)
diff --git a/lib/stm32/f2/hash.c b/lib/stm32/f2/hash.c
deleted file mode 100644
index ca48d8bb..00000000
--- a/lib/stm32/f2/hash.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/** @defgroup hash_file HASH
- *
- * @ingroup STM32F2xx
- *
- * @brief <b>libopencm3 STM32F2xx Hash Processor</b>
- *
- * @version 1.0.0
- *
- * @date 14 January 2014
- *
- * LGPL License Terms @ref lgpl_license
- */
-
-/*
- * This file is part of the libopencm3 project.
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <libopencm3/stm32/hash.h>
diff --git a/lib/stm32/f4/hash.c b/lib/stm32/f4/hash.c
deleted file mode 100644
index cd791bff..00000000
--- a/lib/stm32/f4/hash.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/** @defgroup hash_file HASH
- *
- * @ingroup STM32F4xx
- *
- * @brief <b>libopencm3 STM32F4xx Hash Processor</b>
- *
- * @version 1.0.0
- *
- * @date 13 January 2014
- *
- * LGPL License Terms @ref lgpl_license
- */
-
-/*
- * This file is part of the libopencm3 project.
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <libopencm3/stm32/hash.h>