diff --git a/pilab/events/meta.py b/pilab/events/meta.py
index 85713c7cb5c623a80fbc8596a640d6114778c328..b65d8f2d261ba2ec2307d8313157854f44fc651a 100644
--- a/pilab/events/meta.py
+++ b/pilab/events/meta.py
@@ -31,19 +31,19 @@ class Host(BaseModel):
     mac: str
     ipv4_address: IPv4Address
     hostname: str
+    model: str
 
 class Switch(Host):
     """
     representation of host object with id
     """
-    model: str
     poe: bool
 
 class Controller(Host):
     """
     representation of host object with id
     """
-    model: str
+    pass
 
 
 class HostUpdate(Host):
@@ -58,7 +58,6 @@ class Pi(Host):
     representation of pi object with host id
     """
     serial: bytes
-    display: bool
     position: int
     ssh_host_ed25519_key: Optional[str]
 
diff --git a/pilab/events/reservation.py b/pilab/events/reservation.py
index 293346517981bf7e193a7071d1e984288026a5aa..862ac929ca4beb398576bec41eb00e0955d50bdc 100644
--- a/pilab/events/reservation.py
+++ b/pilab/events/reservation.py
@@ -25,7 +25,7 @@ class Reservation(BaseModel):
     pi_id : int
     starttime: datetime
     endtime: datetime
-    extraUsers: Optional[List[str]] = None
+    extra_users: Optional[List[str]] = None
     reason: str
 
 
@@ -302,10 +302,10 @@ def get_active_users(pi_id: int):
         raise RuntimeError("Reservation consumer is not initialized")
 
     if res and res.endtime > datetime.utcnow().replace(tzinfo=ZoneInfo('UTC')):
-        if res.extraUsers is None:
+        if res.extra_users is None:
             return [res.owner]
         else:
-            return [*res.extraUsers, res.owner]
+            return [*res.extra_users, res.owner]
     else:
         return []
 
diff --git a/setup.py b/setup.py
index d02e696706e81bf5f46e66c8f10d05802702a123..17257795335a85d2dff570a7e44d6340ef9170a9 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='pilab',
-    version='4.3.0',
+    version='4.3.1',
     description='Shared-Libs for the pi-lab microservices',
     url='https://code.fbi.h-da.de/api/v4/projects/27896/packages/pypi/pilab',
     author='Max Reinheimer',