diff --git a/lang/src/codegen.asm b/lang/src/codegen.asm
index e7b4f73..0f507d0 100644
--- a/lang/src/codegen.asm
+++ b/lang/src/codegen.asm
@@ -495,8 +495,6 @@ codegen_function:
     bts word [rsp + 72], 0      ; mark rax as used
     mov word [rsp + 76], 0      ; dirtied_register_bitset = 0
 
-    mov word [rsp + 72], -1     ; reserve all registers (test)
-
     ; push "section .text\n"
     mov rdi, [rsp]              ; ctx
     lea rdi, [rdi + 8]          ; &ctx.text