diff --git a/lib/flash_internal.h b/lib/flash_internal.h
index aaee58b..9908209 100644
--- a/lib/flash_internal.h
+++ b/lib/flash_internal.h
@@ -15,20 +15,11 @@
 /** library to read/write internal flash (API)
  *  @file flash_internal.h
  *  @author King Kévin <kingkevin@cuvoodoo.info>
- *  @date 2016
+ *  @date 2016-2017
  *  @note peripherals used: none
  */
 #pragma once
 
-#include <libopencm3/stm32/desig.h> // device signature utilities
-
-/** how much data (in bytes) should we be able to store (be sure it's available and does not overlap the firmware) */
-#define STORAGE_SIZE 2048
-/** the end of the flash area where to store data */
-#define STORAGE_END FLASH_BASE+DESIG_FLASH_SIZE
-/** the start of the flash area where to store data (be sure it's after the firmware data) */
-#define STORAGE_START STORAGE_END-STORAGE_SIZE
-
 /** read data from internal flash
  *  @param[in] address start address of the data to read
  *  @param[out] buffer where to store the read data