diff --git a/package/STM32G030Booter/startup_stm32g030xx.s b/package/STM32G030Booter/startup_stm32g030xx.s
index 665058485..875ac2bda 100644
--- a/package/STM32G030Booter/startup_stm32g030xx.s
+++ b/package/STM32G030Booter/startup_stm32g030xx.s
@@ -40,7 +40,7 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Heap_Size      EQU     0x1600
+Heap_Size      EQU     ASM_DEFINE_USER_EAP_SIZE
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base