diff --git a/README.md b/README.md
index 274eab10..ddd9bc94 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ oraz wymienianie ich na nagrody.
 ## Uruchomienie:
 - `pip install -r requirements.txt` - instalacja zależności
 - `python recreate_db.py` - stworzenie tabeli w bazie
-- `python run.py` - uruchomienie serwera
+- `export FLASK_APP="zeton"; flask run` - uruchomienie serwera
 
 ### Testowi użytkownicy:
 - na ten moment użytkownicy i ich hasła zapisane są w wykomentowanym kodzie w `recreate_db.py`
diff --git a/run.py b/run.py
deleted file mode 100644
index 66990545..00000000
--- a/run.py
+++ /dev/null
@@ -1,16 +0,0 @@
-import sys, os
-
-sys.path.append(os.getcwd())
-
-import zeton
-
-app = zeton.create_app()
-
-if __name__ == '__main__':
-    # if you want test on computer use this command
-    app.run(debug=True)
-
-    # # If you want test on mobile use this command
-    # # also you must use your local ip in your browser
-    # # Only one statment app.run is allowed
-    # app.run(host='0.0.0.0', port=80, debug=True)
diff --git a/tests/conftest.py b/tests/conftest.py
index 00c84108..74b624b7 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,7 +3,8 @@
 
 import pytest
 
-from zeton import create_app
+# set up app will be used as fixture named app
+from zeton import app as application
 from zeton.db import get_db
 
 # read in SQL for populating test data
@@ -22,14 +23,15 @@ def app():
     # create a temporary file to isolate the database for each test
     db_fd, db_path = tempfile.mkstemp()
     # create the app with common test config
-    app = create_app({"TESTING": True, "DATABASE": db_path})
+
+    application.config.from_mapping({"TESTING": True, "DATABASE": db_path})
 
     # create the database and load test data
-    with app.app_context():
+    with application.app_context():
         get_db().executescript(_init_data_sql)
         get_db().executescript(_data_sql)
 
-    yield app
+    yield application
 
     # close and remove the temporary database
     os.close(db_fd)
diff --git a/zeton/__init__.py b/zeton/__init__.py
index f2cc722e..fdeb5a6b 100644
--- a/zeton/__init__.py
+++ b/zeton/__init__.py
@@ -11,28 +11,22 @@
 from zeton.data_access import users
 
 
-def create_app(test_config=None):
-    app = Flask(__name__, instance_relative_config=True)
+app = Flask(__name__, instance_relative_config=True)
 
-    app.config.from_mapping(
-        SECRET_KEY='AplikacjaDlaStasia',
-        DATABASE=os.path.join(app.root_path, '..', 'db.sqlite'),
-        SITE_NAME='Zeton'
-    )
+app.config.from_mapping(
+    SECRET_KEY='AplikacjaDlaStasia',
+    DATABASE=os.path.join(app.root_path, '..', 'db.sqlite'),
+    SITE_NAME='Zeton'
+)
 
-    if test_config is None:
-        app.config.from_pyfile('config.py', silent=True)
-    else:
-        app.config.from_mapping(test_config)
+app.config.from_pyfile('config.py', silent=True)
 
-    app.teardown_appcontext(db.close_db)
+app.teardown_appcontext(db.close_db)
 
-    app.add_template_filter(jinja2_ban_datetime_filter, 'ban_time')
+app.add_template_filter(jinja2_ban_datetime_filter, 'ban_time')
 
-    app.register_blueprint(auth.bp)
-    app.register_blueprint(views.bp)
-    app.register_blueprint(api.bp)
+app.register_blueprint(auth.bp)
+app.register_blueprint(views.bp)
+app.register_blueprint(api.bp)
 
-    app.before_request(users.load_logged_in_user_data)
-
-    return app
+app.before_request(users.load_logged_in_user_data)