diff --git a/lwmem/src/include/system/lwmem_sys.h b/lwmem/src/include/system/lwmem_sys.h
index 8e17767..2c229b8 100644
--- a/lwmem/src/include/system/lwmem_sys.h
+++ b/lwmem/src/include/system/lwmem_sys.h
@@ -47,10 +47,33 @@ extern "C" {
  * \brief           System functions when used with operating system
  * \{
  */
-
+ 
+/**
+ * \brief           Create a new mutex and assign value to handle
+ * \param[out]      m: Output variable to save mutex handle
+ * \return          `1` on success, `0` otherwise
+ */
 uint8_t     lwmem_sys_mutex_create(LWMEM_CFG_OS_MUTEX_HANDLE* m);
+
+/**
+ * \brief           Check if mutex handle is valid
+ * \param[in]       m: Mutex handle to check if valid
+ * \return          `1` on success, `0` otherwise
+ */
 uint8_t     lwmem_sys_mutex_isvalid(LWMEM_CFG_OS_MUTEX_HANDLE* m);
+
+/**
+ * \brief           Wait for a mutex until ready (unlimited time)
+ * \param[in]       m: Mutex handle to wait for
+ * \return          `1` on success, `0` otherwise
+ */
 uint8_t     lwmem_sys_mutex_wait(LWMEM_CFG_OS_MUTEX_HANDLE* m);
+
+/**
+ * \brief           Release already locked mutex
+ * \param[in]       m: Mutex handle to release
+ * \return          `1` on success, `0` otherwise
+ */
 uint8_t     lwmem_sys_mutex_release(LWMEM_CFG_OS_MUTEX_HANDLE* m);
 
 /**
diff --git a/lwmem/src/system/lwmem_sys_template.c b/lwmem/src/system/lwmem_sys_template.c
deleted file mode 100644
index 317f704..0000000
--- a/lwmem/src/system/lwmem_sys_template.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * \file            lwmem_sys_template.c
- * \brief           System functions template file
- */
-
-/*
- * Copyright (c) 2020 Tilen MAJERLE
- *
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * This file is part of LwMEM - Lightweight dynamic memory manager library.
- *
- * Author:          Tilen MAJERLE <tilen@majerle.eu>
- * Version:         v1.5.3
- */
-#include "system/lwmem_sys.h"
-
-#if LWMEM_CFG_OS || __DOXYGEN__
-
-#include "cmsis_os.h"
-
-/**
- * \brief           Create a new mutex and assign value to handle
- * \param[out]      m: Output variable to save mutex handle
- * \return          `1` on success, `0` otherwise
- */
-uint8_t
-lwmem_sys_mutex_create(LWMEM_CFG_OS_MUTEX_HANDLE* m) {
-    return 1;
-}
-
-/**
- * \brief           Check if mutex handle is valid
- * \param[in]       m: Mutex handle to check if valid
- * \return          `1` on success, `0` otherwise
- */
-uint8_t
-lwmem_sys_mutex_isvalid(LWMEM_CFG_OS_MUTEX_HANDLE* m) {
-    return 1;
-}
-
-/**
- * \brief           Wait for a mutex until ready (unlimited time)
- * \param[in]       m: Mutex handle to wait for
- * \return          `1` on success, `0` otherwise
- */
-uint8_t
-lwmem_sys_mutex_wait(LWMEM_CFG_OS_MUTEX_HANDLE* m) {
-    return 1;
-}
-
-/**
- * \brief           Release already locked mutex
- * \param[in]       m: Mutex handle to release
- * \return          `1` on success, `0` otherwise
- */
-uint8_t
-lwmem_sys_mutex_release(LWMEM_CFG_OS_MUTEX_HANDLE* m) {
-    return 1;
-}
-
-#endif /* LWMEM_CFG_OS || __DOXYGEN__ */