diff --git a/aarch64-hello.s b/aarch64-hello.s
index 2142ffb..75b33a9 100644
--- a/aarch64-hello.s
+++ b/aarch64-hello.s
@@ -1,5 +1,6 @@
-.global _main
+.global start
 
-_main:
-    mov x0, 42  // exit code
-    ret
+start:
+    mov x0, 1
+    add x0, x0, 41
+    b conclusion
diff --git a/runtime.s b/runtime.s
index 44f3fcf..406b1c3 100644
--- a/runtime.s
+++ b/runtime.s
@@ -1,5 +1,7 @@
-.global main
+.global main, conclusion
 main:
-    bl _main
+    b start
+
+conclusion:
 	mov x8, 93 	// sys_exit() is at index 93 in kernel functions table
 	svc #0 		// generate kernel call sys_exit(123);