diff --git a/include/mem_map.h b/include/mem_map.h
index 2885dc1..50439cf 100644
--- a/include/mem_map.h
+++ b/include/mem_map.h
@@ -107,8 +107,8 @@
 #define	A9_STUB_SIZE         (0x200)
 #define A9_HEAP_END          (A9_RAM_BASE + A9_RAM_SIZE)
 #define A9_STACK_START       (DTCM_BASE)
-#define A9_STACK_END         (DTCM_BASE + DTCM_SIZE - 0x800)
-#define A9_IRQ_STACK_START   (DTCM_BASE + DTCM_SIZE - 0x800)
+#define A9_STACK_END         (DTCM_BASE + DTCM_SIZE - 0x400)
+#define A9_IRQ_STACK_START   (DTCM_BASE + DTCM_SIZE - 0x400)
 #define A9_IRQ_STACK_END     (DTCM_BASE + DTCM_SIZE)
 #define A9_EXC_STACK_START   (ITCM_KERNEL_MIRROR + (ITCM_SIZE / 2))
 #define A9_EXC_STACK_END     (ITCM_KERNEL_MIRROR + ITCM_SIZE)
diff --git a/source/arm9/start.s b/source/arm9/start.s
index b869f25..15c50a1 100644
--- a/source/arm9/start.s
+++ b/source/arm9/start.s
@@ -82,10 +82,6 @@
 	bl setupMpu
 
 	@ Setup newlib heap
-	ldr r0, =(__end__ + 12)     @ Do not overwrite the value at symbol __end__
-	bic r0, r0, #7              @ Align to 8 bytes
-	ldr r1, =fake_heap_start
-	str r0, [r1]
 	mov r0, #A9_HEAP_END
 	ldr r1, =fake_heap_end
 	str r0, [r1]