diff --git a/xCAT/xCAT.spec b/xCAT/xCAT.spec
index 058a13a1d..5109229e9 100644
--- a/xCAT/xCAT.spec
+++ b/xCAT/xCAT.spec
@@ -34,9 +34,6 @@ Requires: /etc/xinetd.d/tftp
 # yaboot-xcat is pulled in so any MN can manage ppc nodes
 Requires: conserver-xcat yaboot-xcat 
 %endif
-%ifarch ppc64
-Requires: perl-IO-Stty
-%endif
 %endif
 
 %ifarch i386 i586 i686 x86 x86_64
diff --git a/xCATsn/xCATsn.spec b/xCATsn/xCATsn.spec
index 69c9af89d..d7271663b 100644
--- a/xCATsn/xCATsn.spec
+++ b/xCATsn/xCATsn.spec
@@ -26,12 +26,7 @@ Conflicts: xCAT
 %ifos linux
 # yaboot-xcat is pulled in so any SN can manage ppc nodes
 Requires: dhcp httpd nfs-utils nmap bind perl-XML-Parser
-%ifarch ppc64
-Requires: perl-IO-Stty
-%endif
-%ifarch s390x
-# No additional requires for zLinux right now
-%else
+%ifnarch s390x
 Requires: /etc/xinetd.d/tftp
 Requires: conserver-xcat yaboot-xcat 
 %endif