diff --git a/tests/test_integration_progress.py b/tests/test_integration_progress.py
index 7aed9b4..c69786c 100644
--- a/tests/test_integration_progress.py
+++ b/tests/test_integration_progress.py
@@ -5,7 +5,7 @@ import unittest
 import os
 os.environ['FLASK_TESTING'] = 'true'  # Set before importing app
 
-from app import app, db
+from app import create_app, db
 from models import Progress, LessonProgress
 from services.progress_service import ProgressService
 
@@ -15,10 +15,11 @@ class TestProgressServiceIntegration(unittest.TestCase):
 
     def setUp(self):
         """Setup: Test-App und In-Memory-Datenbank"""
-        app.config['TESTING'] = True
-        app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///:memory:'
-        app.config['WTF_CSRF_ENABLED'] = False
-        self.app = app
+        self.app = create_app({
+            'TESTING': True,
+            'SQLALCHEMY_DATABASE_URI': 'sqlite:///:memory:',
+            'WTF_CSRF_ENABLED': False,
+        })
         self.app_context = self.app.app_context()
         self.app_context.push()
         db.create_all()
@@ -259,10 +260,12 @@ class TestResolveCurrentLessonIndex(unittest.TestCase):
     """Tests für die zentrale Lektions-Auflösung (Resume + Validierung)."""
 
     def setUp(self):
-        app.config['TESTING'] = True
-        app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///:memory:'
-        app.config['WTF_CSRF_ENABLED'] = False
-        self.app_context = app.app_context()
+        self.app = create_app({
+            'TESTING': True,
+            'SQLALCHEMY_DATABASE_URI': 'sqlite:///:memory:',
+            'WTF_CSRF_ENABLED': False,
+        })
+        self.app_context = self.app.app_context()
         self.app_context.push()
         db.create_all()
 
diff --git a/tests/test_integration_statistics.py b/tests/test_integration_statistics.py
index 591ab2b..8c5c94b 100644
--- a/tests/test_integration_statistics.py
+++ b/tests/test_integration_statistics.py
@@ -6,7 +6,7 @@ import os
 os.environ['FLASK_TESTING'] = 'true'  # Set before importing app
 
 from datetime import timedelta, date
-from app import app, db
+from app import create_app, db
 from models import LessonStatistic, DailyPractice
 from services.statistics_service import StatisticsService
 
@@ -16,10 +16,11 @@ class TestStatisticsServiceIntegration(unittest.TestCase):
 
     def setUp(self):
         """Setup: Test-App und In-Memory-Datenbank"""
-        app.config['TESTING'] = True
-        app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///:memory:'
-        app.config['WTF_CSRF_ENABLED'] = False
-        self.app = app
+        self.app = create_app({
+            'TESTING': True,
+            'SQLALCHEMY_DATABASE_URI': 'sqlite:///:memory:',
+            'WTF_CSRF_ENABLED': False,
+        })
         self.app_context = self.app.app_context()
         self.app_context.push()
         db.create_all()