diff --git a/stm32-flash.ld b/stm32-flash.ld
--- a/stm32-flash.ld
+++ b/stm32-flash.ld
@@ -43,7 +43,7 @@ ENTRY(Reset_Handler)
 MEMORY
 {
   FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 32K
-  RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 4K
+  RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 6K
   MEMORY_B1 (rx)  : ORIGIN = 0x60000000, LENGTH = 0K
 }