diff --git a/action_plugins/postconf.py b/action_plugins/postconf.py
index ec92ff4..8a7ffbe 100755
--- a/action_plugins/postconf.py
+++ b/action_plugins/postconf.py
@@ -50,7 +50,7 @@ class ActionModule(ActionBase):
 
 
     def runcmd(self, reg_name, cmd, param=None):
-        fullcmd = 'docker exec '+ self.getarg('container_name') + cmd
+        fullcmd = 'docker exec '+ self.getarg('container_name') + ' ' + cmd
         try:
             if param:
                 self.reg[param][reg_name] = self._execute_module(