diff --git a/OperUp/plugin.py b/OperUp/plugin.py
index 23a272a..1e68b5e 100644
--- a/OperUp/plugin.py
+++ b/OperUp/plugin.py
@@ -94,6 +94,8 @@ class OperUp(callbacks.Plugin):
         """takes no arguments.
         Makes the bot Oper up using the name and password defined in config.
         """
+        if irc.nested:
+            irc.error("This command cannot be nested.", Raise=True)
         if irc.network in self.registryValue('operNets'):
             if self.registryValue("operName") and \
                 self.registryValue("operPass"):
@@ -114,6 +116,8 @@ class OperUp(callbacks.Plugin):
         """takes no arguments.
         Makes the bot deoper by setting user modes -Oo on itself.
         """
+        if irc.nested:
+            irc.error("This command cannot be nested.", Raise=True)
         irc.sendMsg(ircmsgs.mode(irc.nick, "-Oo"))
         irc.replySuccess()
     deoper = wrap(deoper, ['owner'])