diff --git a/bsp/stm32f40x/stm32_rom.ld b/bsp/stm32f40x/stm32_rom.ld
index 20c27f6f1a..bd2ef9fe44 100644
--- a/bsp/stm32f40x/stm32_rom.ld
+++ b/bsp/stm32f40x/stm32_rom.ld
@@ -6,8 +6,8 @@
 /* Program Entry, set to mark it as "used" and avoid gc */
 MEMORY
 {
-    CODE (rx) : ORIGIN = 0x08000000, LENGTH = 512k /* 512KB flash */
-    DATA (rw) : ORIGIN = 0x20000000, LENGTH =  64k /* 64K sram */
+    CODE (rx) : ORIGIN = 0x08000000, LENGTH = 1024k /* 1024KB flash */
+    DATA (rw) : ORIGIN = 0x20000000, LENGTH =  128k /* 128K sram */
 }
 ENTRY(Reset_Handler)
 _system_stack_size = 0x100;