diff --git a/bin/key-mapper-control b/bin/key-mapper-control
index bce5b807..74414f8f 100755
--- a/bin/key-mapper-control
+++ b/bin/key-mapper-control
@@ -97,6 +97,7 @@ def main(options, daemon):
                 continue
 
             preset_path = os.path.join(presets_dir, device, preset + '.json')
+            logger.info('Starting injection: "%s", "%s"', device, preset_path)
             daemon.start_injecting(device, preset_path, config_dir)
 
     if options.command == START:
@@ -109,6 +110,7 @@ def main(options, daemon):
             sys.exit(1)
 
         preset_path = os.path.abspath(os.path.expanduser(options.preset))
+        logger.info('Starting injection: "%s", "%s"', options.device, preset_path)
         daemon.start_injecting(options.device, preset_path, config_dir)
 
     if options.command == STOP:
diff --git a/keymapper/dev/injector.py b/keymapper/dev/injector.py
index e9a4e4f6..5d7a8027 100644
--- a/keymapper/dev/injector.py
+++ b/keymapper/dev/injector.py
@@ -64,7 +64,10 @@ NO_GRAB = 6
 def is_numlock_on():
     """Get the current state of the numlock."""
     try:
-        xset_q = subprocess.check_output(['xset', 'q']).decode()
+        xset_q = subprocess.check_output(
+            ['xset', 'q'],
+            stderr=subprocess.STDOUT
+        ).decode()
         num_lock_status = re.search(
             r'Num Lock:\s+(.+?)\s',
             xset_q
diff --git a/keymapper/dev/keycode_mapper.py b/keymapper/dev/keycode_mapper.py
index f4d4bd0b..aad0bc3e 100644
--- a/keymapper/dev/keycode_mapper.py
+++ b/keymapper/dev/keycode_mapper.py
@@ -226,8 +226,8 @@ def _get_key(event, key_to_code, macros):
 
 def print_unreleased():
     """For debugging purposes."""
-    print('unreleased:')
-    print('\n'.join([
+    logger.debug('unreleased:')
+    logger.debug('\n'.join([
         f'    {key}: {str(value)}' for key, value in unreleased.items()
     ]))
 
@@ -367,4 +367,4 @@ def handle_keycode(key_to_code, macros, event, uinput, forward=True):
         Unreleased((event_tuple[:2]), event_tuple, None)
         return
 
-    logger.error(key, '%s unhandled. %s %s', unreleased, active_macros)
+    logger.error('%s unhandled', key)
diff --git a/keymapper/mapping.py b/keymapper/mapping.py
index 81e0865a..ef72449b 100644
--- a/keymapper/mapping.py
+++ b/keymapper/mapping.py
@@ -116,8 +116,8 @@ class Mapping(ConfigBase):
             raise ValueError('Expected `character` not to be None')
 
         logger.debug(
-            '%s will map to %s, replacing %s',
-            new_key, character, previous_key
+            '%s will map to "%s"',
+            new_key, character
         )
         self.clear(new_key)  # this also clears all equivalent keys
         self._mapping[new_key] = character
@@ -146,6 +146,8 @@ class Mapping(ConfigBase):
                 logger.debug('%s will be cleared', permutation)
                 del self._mapping[permutation]
                 self.changed = True
+                # there should be only one variation of the permutations
+                # in the mapping actually
 
     def empty(self):
         """Remove all mappings."""
diff --git a/keymapper/state.py b/keymapper/state.py
index 00dd6304..bf098b95 100644
--- a/keymapper/state.py
+++ b/keymapper/state.py
@@ -56,7 +56,10 @@ class SystemMapping:
         self.clear()
         xmodmap_dict = {}
         try:
-            xmodmap = subprocess.check_output(['xmodmap', '-pke']).decode()
+            xmodmap = subprocess.check_output(
+                ['xmodmap', '-pke'],
+                stderr=subprocess.STDOUT
+            ).decode()
             xmodmap = xmodmap.lower()
             mappings = re.findall(r'(\d+) = (.+)\n', xmodmap + '\n')
             for keycode, names in mappings:
diff --git a/readme/usage.md b/readme/usage.md
index 2de8b176..54418832 100644
--- a/readme/usage.md
+++ b/readme/usage.md
@@ -170,7 +170,7 @@ running (or without sudo if your user has the appropriate permissions).
 
 ```bash
 key-mapper-control --command autoload
-key-mapper-control --command autoload --config "/home/user/.config/key-mapper/"
+key-mapper-control --command autoload --config-dir "/home/user/.config/key-mapper/"
 sudo key-mapper-control --list-devices
 key-mapper-control --command stop --device "Razer Razer Naga Trinity"
 key-mapper-control --command start --device "Razer Razer Naga Trinity" --preset "~/.config/key-mapper/presets/gamepad/a.json"