diff --git a/os/hal/ports/STM32/STM32F7xx/hal_lld.c b/os/hal/ports/STM32/STM32F7xx/hal_lld.c
index 48ec38cad..9d82755b0 100644
--- a/os/hal/ports/STM32/STM32F7xx/hal_lld.c
+++ b/os/hal/ports/STM32/STM32F7xx/hal_lld.c
@@ -134,7 +134,7 @@ void hal_lld_init(void) {
   /* The SRAM2 bank can optionally made a non cache-able area for use by
      DMA engines.*/
   mpuConfigureRegion(MPU_REGION_7,
-                     0x2004C000U,
+                     SRAM2_BASE,
                      MPU_RASR_ATTR_AP_RW_RW |
                      MPU_RASR_ATTR_NON_CACHEABLE |
                      MPU_RASR_SIZE_16K |
diff --git a/readme.txt b/readme.txt
index c4c9b01aa..1dbd50358 100644
--- a/readme.txt
+++ b/readme.txt
@@ -73,6 +73,8 @@
 *****************************************************************************
 
 *** 16.1.6 ***
+- HAL: Fixed wrong SRAM2_BASE in STM32F7xx port (bug #778)
+       (backported to 16.1.6).
 - HAL: Added DAC configs in RT-STM32F051-DISCOVERY\mcuconf.h (bug #777).
 - HAL: Fixed DAC driver not compiling on STM32F051 and some bitmasks related 
         to DAC disabling (bug #776).