diff --git a/app.py b/app.py
index be5a428..0c5b1a3 100644
--- a/app.py
+++ b/app.py
@@ -1,9 +1,8 @@
-from flask import Flask, request
+from flask import Flask, request, jsonify
 from flask_httpauth import HTTPBasicAuth
 from ipaddress import ip_address
 import logging
 import re
-import json
 from pfctl import pfctl_table_op, pfctl_cfg_read, pfctl_cfg_write
 
 
@@ -49,10 +48,10 @@ def flush(name):
     res = pfctl_table_op('f2b-jail/{remote_user}',
                          table='f2b-{name}',
                          operation='flush')
-    return json.dumps({'anchor': f'f2b-jail/{remote_user}',
-                       'table': f'f2b-{name}',
-                       'operation': 'flush',
-                       'result': res})
+    return jsonify({'anchor': f'f2b-jail/{remote_user}',
+                    'table': f'f2b-{name}',
+                    'operation': 'flush',
+                    'result': res})
 
 
 @app.route("/register", methods=['PUT', 'DELETE'])
@@ -87,12 +86,12 @@ def register():
                        table=f'f2b-{name}',
                        operation='kill')
     logging.info(f'pfctl -a f2b-jail/{remote_user} -f-')
-    return json.dumps({'remote_user': remote_user, 'data': data})
-    return json.dumps({'anchor': f'f2b-jail/{remote_user}',
-                       'table': f'f2b-{name}',
-                       'action': 'start' if request.method == 'PUT'
-                       else 'stop',
-                       'result': res})
+    return jsonify({'remote_user': remote_user, 'data': data})
+    return jsonify({'anchor': f'f2b-jail/{remote_user}',
+                    'table': f'f2b-{name}',
+                    'action': 'start' if request.method == 'PUT'
+                    else 'stop',
+                    'result': res})
 
 
 @app.route("/ban", methods=['PUT', 'DELETE'])
@@ -117,11 +116,11 @@ def ban():
                              table=f'f2b-{name}',
                              operation='delete',
                              value=str(ip))
-    return json.dumps({'anchor': f'f2b-jail/{remote_user}',
-                       'table': f'f2b-{name}',
-                       'operation': 'add' if request.method == 'PUT'
-                       else 'delete',
-                       'result': res})
+    return jsonify({'anchor': f'f2b-jail/{remote_user}',
+                    'table': f'f2b-{name}',
+                    'operation': 'add' if request.method == 'PUT'
+                    else 'delete',
+                    'result': res})
 
 
 @app.errorhandler(ValueError)
@@ -130,10 +129,10 @@ def permission_err(error):
     Show a json parsable error if the value is illegal
     '''
     logging.fatal(error)
-    return json.dumps({'error': str(error)}), 500
+    return jsonify({'error': str(error)}), 500
 
 
 @auth.error_handler
 def auth_error():
     logging.error('Access Denied')
-    return json.dumps({'error': 'Access Denied'}), 401
+    return jsonify({'error': 'Access Denied'}), 401