diff --git a/gns3server/api/routes/controller/groups.py b/gns3server/api/routes/controller/groups.py
index 20b17ae4..a028985b 100644
--- a/gns3server/api/routes/controller/groups.py
+++ b/gns3server/api/routes/controller/groups.py
@@ -99,7 +99,7 @@ async def update_user_group(
     if not user_group:
         raise ControllerNotFoundError(f"User group '{user_group_id}' not found")
 
-    if user_group.builtin:
+    if user_group.is_builtin:
         raise ControllerForbiddenError(f"Built-in user group '{user_group_id}' cannot be updated")
 
     return await users_repo.update_user_group(user_group_id, user_group_update)
@@ -121,7 +121,7 @@ async def delete_user_group(
     if not user_group:
         raise ControllerNotFoundError(f"User group '{user_group_id}' not found")
 
-    if user_group.builtin:
+    if user_group.is_builtin:
         raise ControllerForbiddenError(f"Built-in user group '{user_group_id}' cannot be deleted")
 
     success = await users_repo.delete_user_group(user_group_id)
diff --git a/gns3server/api/routes/controller/roles.py b/gns3server/api/routes/controller/roles.py
index c96feb64..fb8be351 100644
--- a/gns3server/api/routes/controller/roles.py
+++ b/gns3server/api/routes/controller/roles.py
@@ -95,7 +95,7 @@ async def update_role(
     if not role:
         raise ControllerNotFoundError(f"Role '{role_id}' not found")
 
-    if role.builtin:
+    if role.is_builtin:
         raise ControllerForbiddenError(f"Built-in role '{role_id}' cannot be updated")
 
     return await rbac_repo.update_role(role_id, role_update)
@@ -114,7 +114,7 @@ async def delete_role(
     if not role:
         raise ControllerNotFoundError(f"Role '{role_id}' not found")
 
-    if role.builtin:
+    if role.is_builtin:
         raise ControllerForbiddenError(f"Built-in role '{role_id}' cannot be deleted")
 
     success = await rbac_repo.delete_role(role_id)
diff --git a/gns3server/db/models/roles.py b/gns3server/db/models/roles.py
index 76b1d6f1..2cc54f37 100644
--- a/gns3server/db/models/roles.py
+++ b/gns3server/db/models/roles.py
@@ -40,7 +40,7 @@ class Role(BaseTable):
     role_id = Column(GUID, primary_key=True, default=generate_uuid)
     name = Column(String)
     description = Column(String)
-    builtin = Column(Boolean, default=False)
+    is_builtin = Column(Boolean, default=False)
     permissions = relationship("Permission", secondary=permission_role_link, back_populates="roles")
     groups = relationship("UserGroup", secondary=role_group_link, back_populates="roles")
 
@@ -49,8 +49,8 @@ class Role(BaseTable):
 def create_default_roles(target, connection, **kw):
 
     default_roles = [
-        {"name": "Administrator", "description": "Administrator role", "builtin": True},
-        {"name": "User", "description": "User role", "builtin": True},
+        {"name": "Administrator", "description": "Administrator role", "is_builtin": True},
+        {"name": "User", "description": "User role", "is_builtin": True},
     ]
 
     stmt = target.insert().values(default_roles)
diff --git a/gns3server/db/models/users.py b/gns3server/db/models/users.py
index 32c44bbd..8cf3d503 100644
--- a/gns3server/db/models/users.py
+++ b/gns3server/db/models/users.py
@@ -75,7 +75,7 @@ class UserGroup(BaseTable):
 
     user_group_id = Column(GUID, primary_key=True, default=generate_uuid)
     name = Column(String, unique=True, index=True)
-    builtin = Column(Boolean, default=False)
+    is_builtin = Column(Boolean, default=False)
     users = relationship("User", secondary=user_group_link, back_populates="groups")
     roles = relationship("Role", secondary=role_group_link, back_populates="groups")
 
@@ -84,8 +84,8 @@ class UserGroup(BaseTable):
 def create_default_user_groups(target, connection, **kw):
 
     default_groups = [
-        {"name": "Administrators", "builtin": True},
-        {"name": "Users", "builtin": True}
+        {"name": "Administrators", "is_builtin": True},
+        {"name": "Users", "is_builtin": True}
     ]
 
     stmt = target.insert().values(default_groups)
diff --git a/gns3server/schemas/controller/rbac.py b/gns3server/schemas/controller/rbac.py
index 4967e5ef..a3f4c9c1 100644
--- a/gns3server/schemas/controller/rbac.py
+++ b/gns3server/schemas/controller/rbac.py
@@ -114,7 +114,7 @@ class RoleUpdate(RoleBase):
 class Role(DateTimeModelMixin, RoleBase):
 
     role_id: UUID
-    builtin: bool
+    is_builtin: bool
     permissions: List[Permission]
 
     class Config:
diff --git a/gns3server/schemas/controller/users.py b/gns3server/schemas/controller/users.py
index 97988c53..fc60568c 100644
--- a/gns3server/schemas/controller/users.py
+++ b/gns3server/schemas/controller/users.py
@@ -85,7 +85,7 @@ class UserGroupUpdate(UserGroupBase):
 class UserGroup(DateTimeModelMixin, UserGroupBase):
 
     user_group_id: UUID
-    builtin: bool
+    is_builtin: bool
 
     class Config:
         orm_mode = True
diff --git a/tests/api/routes/controller/test_groups.py b/tests/api/routes/controller/test_groups.py
index b762d5c8..4e0700bb 100644
--- a/tests/api/routes/controller/test_groups.py
+++ b/tests/api/routes/controller/test_groups.py
@@ -208,7 +208,7 @@ class TestGroupRolesRoutes:
         roles = await user_repo.get_user_group_roles(group_in_db.user_group_id)
         assert len(roles) == 2  # 1 default role + 1 custom role
         for role in roles:
-            if not role.builtin:
+            if not role.is_builtin:
                 assert role.name == test_role.name
 
     async def test_get_user_group_roles(