diff --git a/nova/virt/zvm/dist.py b/nova/virt/zvm/dist.py
index 440bf91..f50bbef 100644
--- a/nova/virt/zvm/dist.py
+++ b/nova/virt/zvm/dist.py
@@ -116,13 +116,12 @@ class LinuxDist(object):
         """Get network file configuration path."""
         pass
 
-    @abc.abstractmethod
     def get_change_passwd_command(self, admin_password):
         """construct change password command
 
         :admin_password: the password to be changed to
         """
-        pass
+        return "echo 'root:%s' | chpasswd" % admin_password
 
     @abc.abstractmethod
     def _get_cfg_str(self, device, broadcast_v4, gateway_v4, ip_v4,
@@ -187,9 +186,6 @@ class rhel(LinuxDist):
     def _get_network_file_path(self):
         return '/etc/sysconfig/network-scripts/'
 
-    def get_change_passwd_command(self, admin_password):
-        return 'echo %s|passwd --stdin root' % admin_password
-
     def _get_cfg_str(self, device, broadcast_v4, gateway_v4, ip_v4,
                      netmask_v4, address_read, subchannels):
         cfg_str = 'DEVICE=\"' + device + '\"\n'
@@ -400,9 +396,6 @@ class sles11(sles):
                           'service network restart',
                           'cio_ignore -u'))
 
-    def get_change_passwd_command(self, admin_password):
-        return 'echo %s|passwd --stdin root' % admin_password
-
 
 class sles12(sles):
     def get_znetconfig_contents(self):
@@ -417,9 +410,6 @@ class sles12(sles):
                           'znetconf -A',
                           'cio_ignore -u'))
 
-    def get_change_passwd_command(self, admin_password):
-        return "echo 'root:%s' | chpasswd" % admin_password
-
     def get_scp_string(self, root, fcp, wwpn, lun):
         return ("=root=%(root)s zfcp.allow_lun_scan=0 "
                 "zfcp.device=0.0.%(fcp)s,0x%(wwpn)s,0x%(lun)s") % {
@@ -556,9 +546,7 @@ class ubuntu(LinuxDist):
 
 
 class ubuntu16(ubuntu):
-
-    def get_change_passwd_command(self, admin_password):
-        return "echo 'root:%s' | chpasswd" % admin_password
+    pass
 
 
 class ListDistManager(object):