diff --git a/crt0/switch_crt0.s b/crt0/switch_crt0.s
index 55b790d3..1d85fcc7 100644
--- a/crt0/switch_crt0.s
+++ b/crt0/switch_crt0.s
@@ -40,6 +40,15 @@ got_loop:
     subs x1, x1, #8
     bne  got_loop
 
+
+    // setup heap
+    ldr x1, =HEAP_SIZE
+    svc 1
+    ldr x1, =HEAP_SIZE
+    ldr  x3, =heapInit
+    add  x3, x3, x30
+    blr  x3
+
     mov  x0, #0 // argc
     mov  x1, #0 // argv