diff --git a/fdroidserver/common.py b/fdroidserver/common.py
index bbb4fc47..5c9eff52 100644
--- a/fdroidserver/common.py
+++ b/fdroidserver/common.py
@@ -468,7 +468,7 @@ def read_config(opts=None):
                                   .format(key=k, configname=configname))
 
     for configname in confignames_to_delete:
-        del(config[configname])
+        del config[configname]
 
     return config
 
@@ -3656,7 +3656,7 @@ def compare_apks(apk1, apk2, tmp_dir, log_dir=None):
                             '--max-report-size', '12345678', '--max-diff-block-lines', '128',
                             '--html', htmlfile, '--text', textfile,
                             absapk1, absapk2]) != 0:
-            return("Failed to run diffoscope " + apk1)
+            return "Failed to run diffoscope " + apk1
 
     apk1dir = os.path.join(tmp_dir, apk_badchars.sub('_', apk1[0:-4]))  # trim .apk
     apk2dir = os.path.join(tmp_dir, apk_badchars.sub('_', apk2[0:-4]))  # trim .apk
@@ -3675,17 +3675,17 @@ def compare_apks(apk1, apk2, tmp_dir, log_dir=None):
     if set_command_in_config('apktool'):
         if subprocess.call([config['apktool'], 'd', absapk1, '--output', 'apktool'],
                            cwd=apk1dir) != 0:
-            return("Failed to run apktool " + apk1)
+            return "Failed to run apktool " + apk1
         if subprocess.call([config['apktool'], 'd', absapk2, '--output', 'apktool'],
                            cwd=apk2dir) != 0:
-            return("Failed to run apktool " + apk2)
+            return "Failed to run apktool " + apk2
 
     p = FDroidPopen(['diff', '-r', apk1dir, apk2dir], output=False)
     lines = p.output.splitlines()
     if len(lines) != 1 or 'META-INF' not in lines[0]:
         if set_command_in_config('meld'):
             p = FDroidPopen([config['meld'], apk1dir, apk2dir], output=False)
-        return("Unexpected diff output:\n" + p.output)
+        return "Unexpected diff output:\n" + p.output
 
     # since everything verifies, delete the comparison to keep cruft down
     shutil.rmtree(apk1dir)
diff --git a/fdroidserver/index.py b/fdroidserver/index.py
index 5536fe74..6599565b 100644
--- a/fdroidserver/index.py
+++ b/fdroidserver/index.py
@@ -1017,7 +1017,7 @@ def v1_sort_packages(packages, fdroid_signing_key_fingerprints):
         if package.get('versionCode', None):
             versionCode = -int(package['versionCode'])
 
-        return(packageName, group, signer, versionCode)
+        return packageName, group, signer, versionCode
 
     packages.sort(key=v1_sort_keys)
 
diff --git a/fdroidserver/metadata.py b/fdroidserver/metadata.py
index 72737d41..d69fb6f1 100644
--- a/fdroidserver/metadata.py
+++ b/fdroidserver/metadata.py
@@ -816,7 +816,7 @@ def parse_yaml_metadata(mf, app):
                                   "metadata because it is deprecated.")
                                 .format(field=deprecated_field,
                                         metapath=mf.name))
-                del(yamldata[deprecated_field])
+                del yamldata[deprecated_field]
 
         if yamldata.get('Builds', None):
             for build in yamldata.get('Builds', []):
diff --git a/fdroidserver/update.py b/fdroidserver/update.py
index 32b6b55d..fe3a0874 100644
--- a/fdroidserver/update.py
+++ b/fdroidserver/update.py
@@ -751,9 +751,9 @@ def insert_funding_yml_donation_links(apps):
                     app['OpenCollective'] = s
             if not app.get('Donate'):
                 if 'liberapay' in data:
-                    del(data['liberapay'])
+                    del data['liberapay']
                 if 'open_collective' in data:
-                    del(data['open_collective'])
+                    del data['open_collective']
                 # this tuple provides a preference ordering
                 for k in ('custom', 'github', 'patreon', 'community_bridge', 'ko_fi', 'issuehunt'):
                     v = data.get(k)
diff --git a/makebuildserver b/makebuildserver
index b8926f95..428dec50 100755
--- a/makebuildserver
+++ b/makebuildserver
@@ -133,7 +133,7 @@ elif os.path.exists('makebs.config.py'):
     # this is the old name for the config file
     exec(compile(open('makebs.config.py').read(), 'makebs.config.py', 'exec'), config)
 if '__builtins__' in config:
-    del(config['__builtins__'])  # added by compile/exec
+    del config['__builtins__']  # added by compile/exec
 logging.debug("makebuildserver.config.py parsed -> %s", json.dumps(config, indent=4, sort_keys=True))
 if config['basebox'] == BASEBOX_DEFAULT and 'basebox_version' not in config:
     config['basebox_version'] = BASEBOX_VERSION_DEFAULT
diff --git a/tests/update.TestCase b/tests/update.TestCase
index 6428dce2..4c35bf86 100755
--- a/tests/update.TestCase
+++ b/tests/update.TestCase
@@ -319,7 +319,7 @@ class UpdateTest(unittest.TestCase):
                          repoapps['info.guardianproject.urzip']['localized']['en-US']['name'])
         self.assertIsNone(repoapps['obb.mainpatch.current'].get('Name'))
 
-        del(repoapps['info.guardianproject.urzip']['localized'])
+        del repoapps['info.guardianproject.urzip']['localized']
         fdroidserver.update.insert_missing_app_names_from_apks(repoapps, apks)
         self.assertEqual('urzip-πÇÇπÇÇ现代汉语通用字-български-عربي1234',
                          repoapps['info.guardianproject.urzip']['localized']['en-US']['name'])