diff --git a/populate.py b/populate.py
index b60d6fd8..0ac3e3c2 100644
--- a/populate.py
+++ b/populate.py
@@ -279,6 +279,7 @@ if __name__ == '__main__':
         # Generating Teams
         print("GENERATING TEAMS")
         used = []
+        used_oauth_ids = []
         count = 0
         while count < TEAM_AMOUNT:
             name = gen_team_name()
@@ -291,7 +292,11 @@ if __name__ == '__main__':
                 if random_chance():
                     team.affiliation = gen_affiliation()
                 if random_chance():
-                    team.oauth_id = random.randint(1, 1000)
+                    oauth_id = random.randint(1, 1000)
+                    while oauth_id in used_oauth_ids:
+                        oauth_id = random.randint(1, 1000)
+                    used_oauth_ids.append(oauth_id)
+                    team.oauth_id = oauth_id
                 db.session.add(team)
                 count += 1
 
@@ -301,6 +306,7 @@ if __name__ == '__main__':
         # Generating Users
         print("GENERATING USERS")
         used = []
+        used_oauth_ids = []
         count = 0
         while count < USER_AMOUNT:
             name = gen_name()
@@ -316,7 +322,11 @@ if __name__ == '__main__':
                     if random_chance():
                         user.affiliation = gen_affiliation()
                     if random_chance():
-                        user.oauth_id = random.randint(1, 1000)
+                        oauth_id = random.randint(1, 1000)
+                        while oauth_id in used_oauth_ids:
+                            oauth_id = random.randint(1, 1000)
+                        used_oauth_ids.append(oauth_id)
+                        user.oauth_id = oauth_id
                     if mode == 'teams':
                         user.team_id = random.randint(1, TEAM_AMOUNT)
                     db.session.add(user)