diff --git a/qemu/target/arm/helper.c b/qemu/target/arm/helper.c
index 71b48aa5..492ffb0b 100644
--- a/qemu/target/arm/helper.c
+++ b/qemu/target/arm/helper.c
@@ -9384,6 +9384,9 @@ static void arm_cpu_do_interrupt_aarch64_(CPUState *cs)
             break;
         }
     }
+    if (cpu_isar_feature(aa64_mte, cpu)) {
+        new_mode |= PSTATE_TCO;
+    }
 
     pstate_write(env, PSTATE_DAIF | new_mode);
     env->aarch64 = 1;