diff --git a/include/mem_map.h b/include/mem_map.h
index fa1507b..044430e 100644
--- a/include/mem_map.h
+++ b/include/mem_map.h
@@ -141,6 +141,7 @@
 #define A11_FALLBACK_ENTRY   (AXIWRAM_BASE + AXIWRAM_SIZE - 0x4)
 #define A11_STUB_ENTRY       (AXIWRAM_BASE + AXIWRAM_SIZE - 0x200)
 #define	A11_STUB_SIZE        (0x1A0) // Don't overwrite the vectors
+#define A11_HEAP_END         (AXIWRAM_BASE + AXIWRAM_SIZE + DSP_MEM_SIZE)
 #define A11_STACK_START      (A11_STUB_ENTRY - 0xE00)
 #define A11_STACK_END        (A11_STUB_ENTRY)
 #endif
diff --git a/source/arm11/start.s b/source/arm11/start.s
index 5eeef4f..fd52be9 100644
--- a/source/arm11/start.s
+++ b/source/arm11/start.s
@@ -39,6 +39,9 @@
 .extern irqHandler
 .extern __bss_start__
 .extern __bss_end__
+.extern __end__
+.extern fake_heap_start
+.extern fake_heap_end
 .extern setupMmu
 .extern __libc_init_array
 .extern main
@@ -121,6 +124,11 @@
 	sub r1, r1, r0
 	bl clearMem
 
+	@ Setup newlib heap
+	ldr r0, =A11_HEAP_END
+	ldr r1, =fake_heap_end
+	str r0, [r1]
+
 	blx __libc_init_array       @ Initialize ctors and dtors
 
 	@ Wakeup core 1.