diff --git a/files/cert2json.py b/files/cert2json.py
index c90e2c6686df931b40fe4de7071f0f087a680956..8ecf364241d33d2193858b06bc7123ce2570f75b 100755
--- a/files/cert2json.py
+++ b/files/cert2json.py
@@ -46,44 +46,49 @@ if __name__ == "__main__":
         decoded_output = cbot_out.decode("utf-8").split("\n")
 
         provider_dir = os.path.join(BASE_DIR, acme_provider)
-        yaml_file = "{}/{}.yaml".format(provider_dir, acme_provider)
-        json_file = "{}/{}.json".format(provider_dir, acme_provider)
-        json_expired = "{}/{}_expired.json".format(provider_dir, acme_provider)
+        YAML_FILE = "{}/{}.yaml".format(provider_dir, acme_provider)
+        JSON_FILE = "{}/{}.json".format(provider_dir, acme_provider)
+        JSON_EXPIRED = "{}/{}_expired.json".format(provider_dir, acme_provider)
         os.chmod(provider_dir, 0o755)
 
         # open yaml for writing
-        with open(yaml_file, "w") as yaml_out:
+        with open(YAML_FILE, "w") as yaml_out:
             yaml_out.write("---\n")
             for txt_line in decoded_output:
                 if "Certificate Name:" in txt_line:
-                    txt_line_out = re.sub('.*Certificate Name: ', '- certname: ', txt_line)
+                    TXT_LINE_OUT = re.sub(
+                        '.*Certificate Name: ', '- certname: ', txt_line)
                 elif "Serial Number: " in txt_line:
-                    txt_line_out = re.sub('.*Serial Number: ', '  serial_number: ', txt_line)
+                    TXT_LINE_OUT = re.sub(
+                        '.*Serial Number: ', '  serial_number: ', txt_line)
                 elif "Domains: " in txt_line:
                     domains = re.sub('.*Domains: ', '', txt_line).split(" ")
                     domains_modified = ['"' + i + '"' for i in domains]
-                    domains_joined = '\n    - '.join(domains_modified)
-                    txt_line_out = "  domains:\n    - " + domains_joined
+                    DOMAINS_JOINED = '\n    - '.join(domains_modified)
+                    TXT_LINE_OUT = "  domains:\n    - " + DOMAINS_JOINED
                 elif "Expiry Date: " in txt_line:
-                    txt_line_out = re.sub('.*Expiry Date: .*\(', '  expiry_date: "', txt_line) #pylint: disable=W1401
-                    txt_line_out = txt_line_out.replace(')', '') + '"'
+                    TXT_LINE_OUT = re.sub(
+                        '.*Expiry Date: .*\(', '  expiry_date: "', txt_line)  # pylint: disable=W1401
+                    TXT_LINE_OUT = TXT_LINE_OUT.replace(')', '') + '"'
                 else:
-                    txt_line_out = None
+                    TXT_LINE_OUT = None
 
-                if txt_line_out:
-                    yaml_out.write("{}\n".format(txt_line_out))
+                if TXT_LINE_OUT:
+                    yaml_out.write("{}\n".format(TXT_LINE_OUT))
 
         yaml_out.close()
 
         # open yaml for reading and json(s) for writing
-        with open(yaml_file, 'r') as yaml_in, \
-                open(json_file, "w") as json_out, \
-                open(json_expired, "w") as json_exp_out:
+        with open(YAML_FILE, 'r') as yaml_in, \
+                open(JSON_FILE, "w") as json_out, \
+                open(JSON_EXPIRED, "w") as json_exp_out:
             yaml_object = yaml.safe_load(yaml_in)
             json_dumped = json.dumps(yaml_object, indent=4)
             # sorting list of dictionaries by value: https://stackoverflow.com/a/73050/3151187
-            sorted_certname = sorted(ast.literal_eval(json_dumped), key=lambda k: k['certname'])
-            sorted_expired = sorted(ast.literal_eval(json_dumped), key=lambda k: k['expiry_date'])
+            sorted_certname = sorted(ast.literal_eval(
+                json_dumped), key=lambda k: k['certname'])
+            sorted_expired = sorted(ast.literal_eval(
+                json_dumped), key=lambda k: k['expiry_date'])
             sorted_certname_json = json.dumps(sorted_certname, indent=4)
             sorted_expired_json = json.dumps(sorted_expired, indent=4)
             json_out.write(sorted_certname_json)
@@ -96,7 +101,7 @@ if __name__ == "__main__":
         timestamp_file.close()
         json_out.close()
         json_exp_out.close()
-        # os.unlink(yaml_file)
+        # os.unlink(YAML_FILE)
 
     # fix permissions
     os.chmod(BASE_DIR, 0o755)
diff --git a/manifests/nginx.pp b/manifests/nginx.pp
index b0d74267a17c430777acf8613615a421b877aed1..a02d9a2092bcb7b64335a7412d88cf6df06e6905 100644
--- a/manifests/nginx.pp
+++ b/manifests/nginx.pp
@@ -51,7 +51,7 @@ class geant_acme::nginx (
     ensure  => present,
     user    => 'root',
     command => '/usr/bin/flock /tmp/cert2json.lock /root/bin/cert2json.py -p all',
-    minute  => '*/5';
+    minute  => '*/3';
   }
 
 }