diff --git a/xCAT/xCAT.spec b/xCAT/xCAT.spec
index 52e87e5a9..97f2de926 100644
--- a/xCAT/xCAT.spec
+++ b/xCAT/xCAT.spec
@@ -32,6 +32,9 @@ Requires: /etc/xinetd.d/tftp
 # yaboot-xcat is pulled in so any MN can manage ppc nodes
 Requires: conserver-xcat yaboot-xcat perl-Net-Telnet fping
 %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 276247d43..7636e454a 100644
--- a/xCATsn/xCATsn.spec
+++ b/xCATsn/xCATsn.spec
@@ -32,6 +32,9 @@ Requires: /etc/xinetd.d/tftp
 # yaboot-xcat is pulled in so any SN can manage ppc nodes
 Requires: conserver-xcat yaboot-xcat perl-Net-Telnet
 %endif
+%ifarch ppc64
+Requires: perl-IO-Stty
+%endif
 %endif
 
 %ifarch i386 i586 i686 x86 x86_64