diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 7cf9fc4bc6..da24f94baa 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -669,6 +669,7 @@ static void aarch64_max_initfn(Object *obj)
         t = cpu->isar.id_aa64mmfr2;
         t = FIELD_DP64(t, ID_AA64MMFR2, UAO, 1);
         t = FIELD_DP64(t, ID_AA64MMFR2, CNP, 1); /* TTCNP */
+        t = FIELD_DP64(t, ID_AA64MMFR2, ST, 1); /* TTST */
         cpu->isar.id_aa64mmfr2 = t;
 
         /* Replicate the same data to the 32-bit id registers.  */