diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 5d1bccaf46..68e3b5c1f8 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -2015,7 +2015,6 @@ static void disas_exc(DisasContext *s, uint32_t insn)
     int opc = extract32(insn, 21, 3);
     int op2_ll = extract32(insn, 0, 5);
     int imm16 = extract32(insn, 5, 16);
-    TCGv_i32 tmp;
 
     switch (opc) {
     case 0:
@@ -2050,9 +2049,7 @@ static void disas_exc(DisasContext *s, uint32_t insn)
                 break;
             }
             gen_a64_set_pc_im(s->pc_curr);
-            tmp = tcg_const_i32(syn_aa64_smc(imm16));
-            gen_helper_pre_smc(cpu_env, tmp);
-            tcg_temp_free_i32(tmp);
+            gen_helper_pre_smc(cpu_env, tcg_constant_i32(syn_aa64_smc(imm16)));
             gen_ss_advance(s);
             gen_exception_insn(s, s->base.pc_next, EXCP_SMC,
                                syn_aa64_smc(imm16), 3);