diff --git a/ayct_backend/__init__.py b/ayct_backend/__init__.py
index d96bf53..f12cad3 100644
--- a/ayct_backend/__init__.py
+++ b/ayct_backend/__init__.py
@@ -22,6 +22,7 @@ def create_app():
     campaign_db.init_app(app)
 
     twitter_db.create_all(app=app)
+    campaign_db.drop_all(app=app)
     campaign_db.create_all(app=app)
 
     app.register_blueprint(twitter, url_prefix='/twitter')
diff --git a/ayct_backend/campaign/models.py b/ayct_backend/campaign/models.py
index d93cf08..cf7fd99 100644
--- a/ayct_backend/campaign/models.py
+++ b/ayct_backend/campaign/models.py
@@ -7,7 +7,7 @@ class TwitterCampaign(campaign_db.Model):
 
     campaign_id = campaign_db.Column(campaign_db.Integer, primary_key=True)
     campaign_name = campaign_db.Column(campaign_db.String(64), nullable=False)
-    twitter_account_id = campaign_db.Column(campaign_db.String(32), unique=True, nullable=False)
+    twitter_account_id = campaign_db.Column(campaign_db.String(32), nullable=False)
     user_input = campaign_db.Column(campaign_db.String(100), nullable=False)
     generated_content = campaign_db.Column(campaign_db.String(300), nullable=False)
     twitter_post_id = campaign_db.Column(campaign_db.String(32), unique=True, nullable=False)