diff --git a/qemu/target/arm/helper.c b/qemu/target/arm/helper.c
index 8f44cf24..c7ed4a33 100644
--- a/qemu/target/arm/helper.c
+++ b/qemu/target/arm/helper.c
@@ -2034,7 +2034,7 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
          *
          * (Note that HCR.DC makes HCR.VM behave as if it is 1.)
          *
-         * ATS1Hx always uses the 64bit format (not supported yet).
+         * ATS1Hx always uses the 64bit format.
          */
         format64 = arm_s1_regime_using_lpae_format(env, mmu_idx);
 
@@ -2159,7 +2159,7 @@ static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
     MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD;
     uint64_t par64;
 
-    par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS);
+    par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S1E2);
 
     A32_BANKED_CURRENT_REG_SET(env, par, par64);
 }