diff --git a/backend/utils/sequelize.js b/backend/utils/sequelize.js
index 1b6a84b..3057f51 100644
--- a/backend/utils/sequelize.js
+++ b/backend/utils/sequelize.js
@@ -493,7 +493,10 @@ const syncModelsAlways = async (models) => {
                 // Entferne bestehende Foreign Keys vor dem Sync, damit Sequelize sie nicht aktualisiert
                 try {
                     const tableName = model.tableName;
-                    const schema = model.schema || model.options?.schema || 'public';
+                    // Schema kann eine Funktion sein, daher prüfen wir model.options.schema direkt
+                    const schema = model.options?.schema || 'public';
+                    
+                    console.log(`  🔍 Checking for foreign keys in ${schema}.${tableName}...`);
                     const foreignKeys = await sequelize.query(`
                         SELECT tc.constraint_name
                         FROM information_schema.table_constraints AS tc
@@ -506,16 +509,22 @@ const syncModelsAlways = async (models) => {
                     });
                     
                     if (foreignKeys && foreignKeys.length > 0) {
-                        console.log(`  ⚠️  Removing ${foreignKeys.length} existing foreign keys from ${model.name} before sync`);
+                        console.log(`  ⚠️  Found ${foreignKeys.length} existing foreign keys:`, foreignKeys.map(fk => fk.constraint_name).join(', '));
+                        console.log(`  ⚠️  Removing ${foreignKeys.length} existing foreign keys from ${model.name} (schema: ${schema}) before sync`);
                         for (const fk of foreignKeys) {
+                            console.log(`  🗑️  Dropping constraint: ${fk.constraint_name}`);
                             await sequelize.query(`
                                 ALTER TABLE "${schema}"."${tableName}" 
-                                DROP CONSTRAINT IF EXISTS "${fk.constraint_name}"
+                                DROP CONSTRAINT IF EXISTS "${fk.constraint_name}" CASCADE
                             `);
                         }
+                        console.log(`  ✅ All foreign keys removed for ${model.name}`);
+                    } else {
+                        console.log(`  ✅ No foreign keys found for ${model.name}`);
                     }
                 } catch (fkError) {
                     console.warn(`  ⚠️  Could not remove foreign keys for ${model.name}:`, fkError.message);
+                    console.warn(`  ⚠️  Error details:`, fkError);
                 }
                 
                 console.log(`  🔄 Syncing model ${model.name} with constraints: false`);