diff --git a/CTFd/admin.py b/CTFd/admin.py
index c963864..0177055 100644
--- a/CTFd/admin.py
+++ b/CTFd/admin.py
@@ -292,12 +292,12 @@ def admin_chals():
         chals = Challenges.query.add_columns('id', 'name', 'value', 'description', 'category', 'hidden').order_by(Challenges.value).all()
 
         teams_with_points = db.session.query(Solves.teamid, Teams.name).join(Teams).filter(
-            Teams.banned == None).group_by(
+            Teams.banned == False).group_by(
                 Solves.teamid).count()
 
         json_data = {'game':[]}
         for x in chals:
-            solve_count = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.chalid==x[1], Teams.banned==None).count()
+            solve_count = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.chalid == x[1], Teams.banned == False).count()
             if teams_with_points > 0:
                 percentage = (float(solve_count) / float(teams_with_points))
             else:
@@ -506,7 +506,7 @@ def email_user(teamid):
 @admins_only
 def ban(teamid):
     user = Teams.query.filter_by(id=teamid).first()
-    user.banned = 1
+    user.banned = True
     db.session.commit()
     return redirect(url_for('admin.admin_scoreboard'))
 
@@ -515,7 +515,7 @@ def ban(teamid):
 @admins_only
 def unban(teamid):
     user = Teams.query.filter_by(id=teamid).first()
-    user.banned = None
+    user.banned = False
     db.session.commit()
     return redirect(url_for('admin.admin_scoreboard'))
 
@@ -545,7 +545,7 @@ def admin_graph(graph_type):
             json_data['categories'].append({'category':category, 'count':count})
         return jsonify(json_data)
     elif graph_type == "solves":
-        solves = Solves.query.join(Teams).filter(Teams.banned==None).add_columns(db.func.count(Solves.chalid)).group_by(Solves.chalid).all()
+        solves = Solves.query.join(Teams).filter(Teams.banned == False).add_columns(db.func.count(Solves.chalid)).group_by(Solves.chalid).all()
         json_data = {}
         for chal, count in solves:
             json_data[chal.chal.name] = count
@@ -633,7 +633,7 @@ def delete_award(award_id):
 def admin_scores():
     score = db.func.sum(Challenges.value).label('score')
     quickest = db.func.max(Solves.date).label('quickest')
-    teams = db.session.query(Solves.teamid, Teams.name, score).join(Teams).join(Challenges).filter(Teams.banned == None).group_by(Solves.teamid).order_by(score.desc(), quickest)
+    teams = db.session.query(Solves.teamid, Teams.name, score).join(Teams).join(Challenges).filter(Teams.banned == False).group_by(Solves.teamid).order_by(score.desc(), quickest)
     db.session.close()
     json_data = {'teams':[]}
     for i, x in enumerate(teams):
@@ -765,8 +765,8 @@ def admin_correct_key(page='1'):
 @admins_only
 def admin_fails(teamid='all'):
     if teamid == "all":
-        fails = WrongKeys.query.join(Teams, WrongKeys.teamid == Teams.id).filter(Teams.banned==None).count()
-        solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Teams.banned==None).count()
+        fails = WrongKeys.query.join(Teams, WrongKeys.teamid == Teams.id).filter(Teams.banned == False).count()
+        solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Teams.banned == False).count()
         db.session.close()
         json_data = {'fails':str(fails), 'solves': str(solves)}
         return jsonify(json_data)
diff --git a/CTFd/challenges.py b/CTFd/challenges.py
index 145f6fd..acabb14 100644
--- a/CTFd/challenges.py
+++ b/CTFd/challenges.py
@@ -56,7 +56,7 @@ def chals():
 @challenges.route('/chals/solves')
 def chals_per_solves():
     if can_view_challenges():
-        solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Teams.banned==None).add_columns(db.func.count(Solves.chalid)).group_by(Solves.chalid).all()
+        solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Teams.banned == False).add_columns(db.func.count(Solves.chalid)).group_by(Solves.chalid).all()
         json = {}
         for chal, count in solves:
             json[chal.chal.name] = count
@@ -73,7 +73,7 @@ def solves(teamid=None):
         if is_admin():
             solves = Solves.query.filter_by(teamid=session['id']).all()
         elif authed():
-            solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.teamid==session['id'], Teams.banned==None).all()
+            solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.teamid == session['id'], Teams.banned == False).all()
         else:
             return redirect(url_for('auth.login', next='solves'))
     else:
@@ -125,7 +125,7 @@ def fails(teamid):
 
 @challenges.route('/chal/<chalid>/solves', methods=['GET'])
 def who_solved(chalid):
-    solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.chalid==chalid, Teams.banned==None).order_by(Solves.date.asc())
+    solves = Solves.query.join(Teams, Solves.teamid == Teams.id).filter(Solves.chalid == chalid, Teams.banned == False).order_by(Solves.date.asc())
     json = {'teams':[]}
     for solve in solves:
         json['teams'].append({'id':solve.team.id, 'name':solve.team.name, 'date':solve.date})
diff --git a/CTFd/models.py b/CTFd/models.py
index 66ee082..6be6705 100644
--- a/CTFd/models.py
+++ b/CTFd/models.py
@@ -140,9 +140,9 @@ class Teams(db.Model):
     affiliation = db.Column(db.String(128))
     country = db.Column(db.String(32))
     bracket = db.Column(db.String(32))
-    banned = db.Column(db.Boolean)
-    verified = db.Column(db.Boolean)
-    admin = db.Column(db.Boolean)
+    banned = db.Column(db.Boolean, default=False)
+    verified = db.Column(db.Boolean, default=False)
+    admin = db.Column(db.Boolean, default=False)
 
     def __init__(self, name, email, password):
         self.name = name
@@ -154,7 +154,7 @@ class Teams(db.Model):
 
     def score(self):
         score = db.func.sum(Challenges.value).label('score')
-        team = db.session.query(Solves.teamid, score).join(Teams).join(Challenges).filter(Teams.banned == None, Teams.id==self.id).group_by(Solves.teamid).first()
+        team = db.session.query(Solves.teamid, score).join(Teams).join(Challenges).filter(Teams.banned == False, Teams.id==self.id).group_by(Solves.teamid).first()
         award_score = db.func.sum(Awards.value).label('award_score')
         award = db.session.query(award_score).filter_by(teamid=self.id).first()
         if team:
@@ -165,7 +165,7 @@ class Teams(db.Model):
     def place(self):
         score = db.func.sum(Challenges.value).label('score')
         quickest = db.func.max(Solves.date).label('quickest')
-        teams = db.session.query(Solves.teamid).join(Teams).join(Challenges).filter(Teams.banned == None).group_by(Solves.teamid).order_by(score.desc(), quickest).all()
+        teams = db.session.query(Solves.teamid).join(Teams).join(Challenges).filter(Teams.banned == False).group_by(Solves.teamid).order_by(score.desc(), quickest).all()
         #http://codegolf.stackexchange.com/a/4712
         try:
             i = teams.index((self.id,)) + 1
diff --git a/CTFd/scoreboard.py b/CTFd/scoreboard.py
index 3a5d5c9..e18d6f8 100644
--- a/CTFd/scoreboard.py
+++ b/CTFd/scoreboard.py
@@ -14,7 +14,7 @@ def scoreboard_view():
     scores = db.session.query(Solves.teamid.label('teamid'), Teams.name.label('name'), score, Solves.date.label('date')) \
         .join(Teams) \
         .join(Challenges) \
-        .filter(Teams.banned == None) \
+        .filter(Teams.banned == False) \
         .group_by(Solves.teamid)
 
     awards = db.session.query(Teams.id.label('teamid'), Teams.name.label('name'),
@@ -41,7 +41,7 @@ def scores():
     scores = db.session.query(Solves.teamid.label('teamid'), Teams.name.label('name'), score, Solves.date.label('date')) \
         .join(Teams) \
         .join(Challenges) \
-        .filter(Teams.banned == None) \
+        .filter(Teams.banned == False) \
         .group_by(Solves.teamid)
 
     awards = db.session.query(Teams.id.label('teamid'), Teams.name.label('name'), db.func.sum(Awards.value).label('score'), Awards.date.label('date'))\
@@ -79,7 +79,7 @@ def topteams(count):
     scores = db.session.query(Solves.teamid.label('teamid'), Teams.name.label('name'), score, Solves.date.label('date')) \
         .join(Teams) \
         .join(Challenges) \
-        .filter(Teams.banned == None) \
+        .filter(Teams.banned == False) \
         .group_by(Solves.teamid)
 
     awards = db.session.query(Teams.id.label('teamid'), Teams.name.label('name'),