diff --git a/lib/core/core.ex b/lib/core/core.ex
index bfb3cd0..25f5571 100644
--- a/lib/core/core.ex
+++ b/lib/core/core.ex
@@ -10,7 +10,7 @@ defmodule Omnibot.Core do
     if nick == cfg.nick do
       add_channel(channel)
       # Sync if we join a channel we shouldn't be in
-      if !Enum.member?(Config.all_channels(cfg), channel),
+      if channel in Config.all_channels(cfg),
         do: sync_channels(irc)
     end
   end
@@ -21,7 +21,7 @@ defmodule Omnibot.Core do
     if nick == cfg.nick do
       remove_channel(channel)
       # Sync if we join a channel we forcibly part a channel we shouldn't leave
-      if Enum.member?(Config.all_channels(cfg), channel),
+      if channel in Config.all_channels(cfg),
         do: sync_channels(irc)
     end
   end
diff --git a/lib/plugin/base.ex b/lib/plugin/base.ex
index 968e765..4afff9f 100644
--- a/lib/plugin/base.ex
+++ b/lib/plugin/base.ex
@@ -50,7 +50,7 @@ defmodule Omnibot.Plugin.Base do
               line = Enum.join(params, " ")
 
               case String.split(line, " ") do
-                [cmd | params] -> if Enum.member?(commands(), cmd),
+                [cmd | params] -> if cmd in commands(),
                     do: on_channel_msg(irc, channel, nick, cmd, params),
                     else: on_channel_msg(irc, channel, nick, line)
                   _ -> on_channel_msg(irc, channel, nick, line)