diff --git a/ceph.spec b/ceph.spec
index 9cf7838..f9c9dc5 100644
--- a/ceph.spec
+++ b/ceph.spec
@@ -39,7 +39,7 @@
 %global _system_pmdk 1
 %endif
 %if 0%{?fedora} || 0%{?rhel}
-%ifarch s390 %{arm64}
+%ifarch s390x %{arm64}
 %bcond_with system_pmdk
 %else
 %bcond_without system_pmdk