diff --git a/hub/persistence/models/user_applications.py b/hub/persistence/models/user_applications.py
index d4c856af..978803f8 100644
--- a/hub/persistence/models/user_applications.py
+++ b/hub/persistence/models/user_applications.py
@@ -7,7 +7,7 @@ Project Coder Guille Gutierrez Guillermo.GutierrezMorote@concordia.ca
 
 import datetime
 
-from sqlalchemy import Column, Integer, ForeignKey
+from sqlalchemy import Column, Integer, ForeignKey, PrimaryKeyConstraint
 from sqlalchemy import DateTime
 
 from hub.persistence.db_config import Base
@@ -23,6 +23,7 @@ class UserApplications(Base):
 
   created = Column(DateTime, default=datetime.datetime.utcnow)
   updated = Column(DateTime, default=datetime.datetime.utcnow)
+  __table_args__ = (PrimaryKeyConstraint(user_id, application_id),)
 
   def __init__(self, user_id, application_id):
     self.user_id = user_id