diff --git a/frank/frank.py b/frank/frank.py
index 62c52ab..2a8a01e 100644
--- a/frank/frank.py
+++ b/frank/frank.py
@@ -88,10 +88,13 @@ class Frank(discord.Client):
         except ValueError:
             return
 
-        if cmd and cmd[0] == self.PREFIX:
-            module = next((mod for mod in self._loaded_modules
-                           if mod.match(cmd[1])), None)
+        # Exit if no commands are given or prefix is wrong
+        if not (cmd and cmd[0] == self.PREFIX):
+            return
 
-            if module:
-                await module(cmd=cmd[2:], author=message.author,
-                             channel=message.channel, mid=message.id)
+        module = next((mod for mod in self._loaded_modules
+                       if mod.match(cmd[1])), None)
+
+        if module:
+            await module(cmd=cmd[2:], author=message.author,
+                         channel=message.channel, mid=message.id)
diff --git a/frank/module/decorators/classes.py b/frank/module/decorators/classes.py
index 11f17a3..3b1c187 100644
--- a/frank/module/decorators/classes.py
+++ b/frank/module/decorators/classes.py
@@ -102,7 +102,7 @@ class RegexCommand(Command):
 
 class Daemon(Simple):
     """
-    Represents a daemon aka a background process.
+    Represents a daemon a.k.a. a background process.
     """
 
     def __init__(self, func: callable, interval: Union[int, float] = 0):
@@ -122,6 +122,7 @@ class Daemon(Simple):
         if interval > 0:
             async def loop(self, *args, **kwargs):
                 while True:
+                    # TODO: does this make func and sleep run at the same time?
                     await func(self, *args, **kwargs)
 
                     await asyncio.sleep(interval)
@@ -131,7 +132,7 @@ class Daemon(Simple):
 
 class Default(Simple):
     """
-    Represents a default command (a.k.a. when the module is called without a
+    Represents a default command a.k.a. when the module is called without a
     command.
     """
 
diff --git a/frank/module/module.py b/frank/module/module.py
index 5facd13..3c9dbf4 100644
--- a/frank/module/module.py
+++ b/frank/module/module.py
@@ -100,18 +100,18 @@ class Module(ModuleMeta):
             func = next((func for func in self.commands
                          if func.match(cmd[0])), None)
 
-            if func:
-                # A RegexCommand can use the prefix, as it's not a fixed string
-                if isinstance(func, RegexCommand):
-                    await func(prefix=cmd[0], cmd=cmd[1:], author=author,
-                               channel=channel, mid=mid)
+            # Throw error if no function is found
+            if not func:
+                raise InvalidCommand(f'Unknown command: {cmd}')
 
-                else:
-                    await func(cmd=cmd[1:], author=author, channel=channel,
-                               mid=mid)
+            # A RegexCommand can use the prefix, as it's not a fixed string
+            if isinstance(func, RegexCommand):
+                await func(prefix=cmd[0], cmd=cmd[1:], author=author,
+                           channel=channel, mid=mid)
 
             else:
-                raise InvalidCommand(f'Unknown command: {cmd}')
+                await func(cmd=cmd[1:], author=author, channel=channel,
+                           mid=mid)
 
         elif self.default:
             await self.default(author=author, channel=channel, mid=mid)
@@ -125,12 +125,12 @@ class Module(ModuleMeta):
             prefix: prefix to check
         """
 
-        if cls.PREFIX:
-            if isinstance(cls.PREFIX, list):
-                return prefix in cls.PREFIX
+        # Always return False if there's no PREFIX defined
+        if not cls.PREFIX:
+            return False
 
-            else:
-                return prefix == cls.PREFIX
+        if isinstance(cls.PREFIX, list):
+            return prefix in cls.PREFIX
 
         else:
-            return False
+            return prefix == cls.PREFIX