diff --git a/boards/arm/stm32/stm32f401rc-rs485/scripts/ld.script b/boards/arm/stm32/stm32f401rc-rs485/scripts/ld.script
index e88b1296829..96355a37626 100644
--- a/boards/arm/stm32/stm32f401rc-rs485/scripts/ld.script
+++ b/boards/arm/stm32/stm32f401rc-rs485/scripts/ld.script
@@ -18,7 +18,7 @@
  *
  ****************************************************************************/
 
-/* The STM32F401RC has 128Kb of FLASH beginning at address 0x0800:0000 and
+/* The STM32F401RC has 256Kb of FLASH beginning at address 0x0800:0000 and
  * 64Kb of SRAM beginning at address 0x2000:0000.  When booting from FLASH,
  * FLASH memory is aliased to address 0x0000:0000 where the code expects to
  * begin execution by jumping to the entry point in the 0x0800:0000 address
@@ -27,7 +27,7 @@
 
 MEMORY
 {
-  flash (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+  flash (rx) : ORIGIN = 0x08000000, LENGTH = 256K
   sram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
 }