diff --git a/asm/asm.h b/asm/asm.h
index 17fa7dc..9cbd184 100644
--- a/asm/asm.h
+++ b/asm/asm.h
@@ -168,76 +168,3 @@ Line s_rmod_r(Reg dst_reg, Reg op1_reg, Reg op2_reg);
 #define s_push_r(REG) s_add_i(Rsp, Rsp, 2), s_mov16_mr_r(Rsp, 0, REG)
 
 #define s_pop_r(REG) s_mov16_r_mr(REG, Rsp, 0), s_sub_i(Rsp, Rsp, 2)
-
-#ifdef ASM_NO_CTOR_PREFIX
-#define label s_label
-#define data_i s_data_i
-#define data_l s_data_l
-#define nop s_nop
-#define hlt s_hlt
-#define jmp_r s_jmp_r
-#define jmp_i s_jmp_i
-#define jmp_l s_jmp_l
-#define jnz_r s_jnz_r
-#define jnz_i s_jnz_i
-#define jnz_l s_jnz_l
-#define cmp_r s_cmp_r
-#define cmp_i s_cmp_i
-#define cmp_l s_cmp_l
-#define mov8_mr_r s_mov8_mr_r
-#define mov8_mi_i s_mov8_mi_i
-#define mov8_mi_r s_mov8_mi_r
-#define mov16_r_r s_mov16_r_r
-#define mov16_r_i s_mov16_r_i
-#define mov16_r_mr s_mov16_r_mr
-#define mov16_r_mi s_mov16_r_mi
-#define mov16_r_ml s_mov16_r_ml
-#define mov16_mr_r s_mov16_mr_r
-#define mov16_ml_r s_mov16_ml_r
-#define in_i s_in_i
-#define call_i s_call_i
-#define call_l s_call_l
-#define ret s_ret
-#define lit_i s_lit_i
-#define lit_l s_lit_l
-#define int_ s_int
-#define iret s_iret
-#define or_i s_or_i
-#define xor_i s_xor_i
-#define and_i s_and_i
-#define shl_i s_shl_i
-#define rshl_i s_rshl_i
-#define shr_i s_shr_i
-#define rshr_i s_rshr_i
-#define add_i s_add_i
-#define sub_i s_sub_i
-#define rsub_i s_rsub_i
-#define mul_i s_mul_i
-#define imul_i s_imul_i
-#define div_i s_div_i
-#define idiv_i s_idiv_i
-#define rdiv_i s_rdiv_i
-#define ridiv_i s_ridiv_i
-#define mod_i s_mod_i
-#define rmod_i s_rmod_i
-#define or_r s_or_r
-#define xor_r s_xor_r
-#define and_r s_and_r
-#define shl_r s_shl_r
-#define rshl_r s_rshl_r
-#define shr_r s_shr_r
-#define rshr_r s_rshr_r
-#define add_r s_add_r
-#define sub_r s_sub_r
-#define rsub_r s_rsub_r
-#define mul_r s_mul_r
-#define imul_r s_imul_r
-#define div_r s_div_r
-#define idiv_r s_idiv_r
-#define rdiv_r s_rdiv_r
-#define ridiv_r s_ridiv_r
-#define mod_r s_mod_r
-#define rmod_r s_rmod_r
-#define push_r s_push_r
-#define pop_r s_pop_r
-#endif