diff --git a/bumblebee_status/modules/contrib/usage.py b/bumblebee_status/modules/contrib/usage.py
index 5f21198..b05ace2 100644
--- a/bumblebee_status/modules/contrib/usage.py
+++ b/bumblebee_status/modules/contrib/usage.py
@@ -4,6 +4,7 @@
 Module for ActivityWatch (https://activitywatch.net/)
 Displays the amount of time the system was used actively
 """
+
 import sqlite3
 import os
 
@@ -14,40 +15,49 @@ import core.widget
 class Module(core.module.Module):
     def __init__(self, config, theme):
         super().__init__(config, theme, core.widget.Widget(self.output))
-        self.__uptime = ""
+        self.__usage = ""
 
     def output(self, _):
-        return "{}".format(self.__uptime)
+        return "{}".format(self.__usage)
 
     def update(self):
-        database_loc = self.parameter('database', '~/.local/share/activitywatch/aw-server/peewee-sqlite.v2.db')
-        home = os.path.expanduser('~')
+        database_loc = self.parameter(
+            "database", "~/.local/share/activitywatch/aw-server/peewee-sqlite.v2.db"
+        )
+        home = os.path.expanduser("~")
 
-        database = sqlite3.connect(database_loc.replace('~', home))
+        database = sqlite3.connect(database_loc.replace("~", home))
         cursor = database.cursor()
-        
-        cursor.execute('SELECT key, id FROM bucketmodel')
+
+        cursor.execute("SELECT key, id FROM bucketmodel")
 
         bucket_id = 1
 
         for tuple in cursor.fetchall():
-            if 'aw-watcher-afk' in tuple[1]:
+            if "aw-watcher-afk" in tuple[1]:
                 bucket_id = tuple[0]
 
-        cursor.execute(f'SELECT duration, datastr FROM eventmodel WHERE bucket_id = {bucket_id} ' +
-                       'AND strftime(\'%Y,%m,%d\', timestamp) = strftime(\'%Y,%m,%d\', \'now\')')
-        
+        cursor.execute(
+            f"SELECT duration, datastr FROM eventmodel WHERE bucket_id = {bucket_id} "
+            + 'AND strftime("%Y,%m,%d", timestamp) = strftime("%Y,%m,%d", "now")'
+        )
+
         duration = 0
 
         for tuple in cursor.fetchall():
             if '{"status": "not-afk"}' in tuple[1]:
                 duration += tuple[0]
 
-        hours = '%.0f' % (duration // 3600)
-        minutes = '%.0f' % ((duration % 3600) // 60)
-        seconds = '%.0f' % (duration % 60)
-        
-        formatting = self.parameter('format', 'HHh, MMmin')
-        self.__uptime = formatting.replace('HH', hours).replace('MM', minutes).replace('SS', seconds)
+        hours = "%.0f" % (duration // 3600)
+        minutes = "%.0f" % ((duration % 3600) // 60)
+        seconds = "%.0f" % (duration % 60)
+
+        formatting = self.parameter("format", "HHh, MMmin")
+        self.__usage = (
+            formatting.replace("HH", hours)
+            .replace("MM", minutes)
+            .replace("SS", seconds)
+        )
+
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4