diff --git a/HardcodeTray/modules/applications/helpers/data_pack.py b/HardcodeTray/modules/applications/helpers/data_pack.py
index 13b25825..de08e064 100644
--- a/HardcodeTray/modules/applications/helpers/data_pack.py
+++ b/HardcodeTray/modules/applications/helpers/data_pack.py
@@ -35,7 +35,7 @@ def set_value(self, key, value):
             self._resources[int(key)] = value
         except KeyError:
             Logger.warning("The key {0} dosen't seem to"
-                  " be found on {1}".format(key, self._filename))
+                           " be found on {1}".format(key, self._filename))
 
     def get_value(self, key):
         """Get the value of a specific key in the resources list."""
@@ -43,7 +43,7 @@ def get_value(self, key):
             return self._resources.get(int(key))
         except KeyError:
             Logger.warning("The key {0} dosen't seem to"
-                  " be found on {1}".format(key, self._filename))
+                           " be found on {1}".format(key, self._filename))
             return None
 
     def _read(self):
@@ -54,15 +54,16 @@ def _read(self):
         version = unpack('<I', data[:4])[0]
         self._version = version
         if version == 4:
-            resources_count, encoding = unpack('IB', data[4:0])
+            resources_count, _ = unpack('IB', data[4:0])
             alias_count = 0
             header_size = 9
         elif version == 5:
-            encoding, resources_count, alias_count = unpack(
+            _, resources_count, alias_count = unpack(
                 'BxxxHH', data[4:12])
             header_size = 12
 
         def entry_at_index(idx):
+            """Return the source entry at the index @idx."""
             entry_size = 2 + 4
             offset = header_size + idx * entry_size
             return unpack('<HI', data[offset: offset + entry_size])
@@ -78,6 +79,7 @@ def entry_at_index(idx):
         id_table_size = (resources_count + 1) * (2 + 4)
 
         def alias_at_index(idx):
+            """Return the alias at index @idx. Works only on V5."""
             alias_size = 2 + 2
             offset = header_size + id_table_size + idx * alias_size
             return unpack('<HH', data[offset: offset + alias_size])
@@ -101,12 +103,8 @@ def write(self):
 
         resource_count = len(self._resources) - len(alias_map)
 
-        ret.append(pack('<IBxxxHH',
-                        self._version,
-                        0,
-                        resource_count,
-                        len(alias_map)
-                        ))
+        ret.append(pack('<IBxxxHH', self._version, 0,
+                        resource_count, len(alias_map)))
 
         # Write index.
         HEADER_LENGTH = 4 + 4 + 2 + 2
diff --git a/README.md b/README.md
index a19e868b..baa6968c 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/4d5c0768b874407bb1dcc2f928899ba5)](https://www.codacy.com/app/bil-elmoussaoui/Hardcode-Tray?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=bil-elmoussaoui/Hardcode-Tray&amp;utm_campaign=Badge_Grade)
 [![Gitter](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/Hardcode-Tray/Lobby?utm_source=share-link&utm_medium=link&utm_campaign=share-link)
 [![Hardcode-Tray
-release](https://img.shields.io/badge/release-v4.1-blue.svg)](https://github.com/bil-elmoussaoui/Hardcode-Tray/releases)
+release](https://img.shields.io/badge/release-v4.2-blue.svg)](https://github.com/bil-elmoussaoui/Hardcode-Tray/releases)
 [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.me/BilalELMoussaoui)
 
 Fixes Hardcoded tray icons in Linux
diff --git a/meson.build b/meson.build
index a39f3561..421c978f 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('hardcode-tray',
-  version: '4.1',
+  version: '4.2',
   meson_version: '>= 0.40.0',
   license: 'GPL-3.0',
   default_options: ['prefix=/usr']