diff --git a/src/hulk/hulk.d b/src/hulk/hulk.d
index 15a34df..0ad1555 100644
--- a/src/hulk/hulk.d
+++ b/src/hulk/hulk.d
@@ -3,7 +3,7 @@ import hos.memory;
 import ldc.attributes;
 
 @(ldc.attributes.section(".hulk_start"))
-extern(C) void hulk_start(BootInfo * bootinfo)
+extern(C) void hulk_start(ulong rdi, ulong rsi, ulong rdx, BootInfo * bootinfo)
 {
     for (size_t y = 100u; y < 120u; y++)
     {