diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..65c18b3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+key
+/app.db
+/key
+/migrations/*
+/venv/*
\ No newline at end of file
diff --git a/app/models.py b/app/models.py
index 4f12207..813dd46 100644
--- a/app/models.py
+++ b/app/models.py
@@ -15,6 +15,8 @@ class User(UserMixin, db.Model):
         self.password_hash = generate_password_hash(password)
 
     def check_password(self, password):
+        if self.password_hash is None:
+            raise "{} has no password_hash set!".format(self.__repr__())
         return check_password_hash(self.password_hash, password)
 
     def __repr__(self):