diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 7c253ff308c5..d4464a2ea665 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -1297,6 +1297,8 @@ static void init_ignored_base_feat(void)
          S390_FEAT_KM_TDEA_192,
          S390_FEAT_KIMD_SHA_1,
          S390_FEAT_KLMD_SHA_1,
+         /* CSSKE is deprecated on newer generations */
+         S390_FEAT_CONDITIONAL_SSKE,
     };
     int i;