diff --git a/src/fiber_package/committee/committee.py b/src/fiber_package/committee/committee.py
index 42090e9..fb6aa99 100644
--- a/src/fiber_package/committee/committee.py
+++ b/src/fiber_package/committee/committee.py
@@ -32,8 +32,8 @@ class CommitteeModel(FiberBaseModel):
 
     ldap_id: int | None = None
 
-    editions: CommitteeEditionRefList
-    current_edition: CommitteeEditionRef | None
+    editions: CommitteeEditionRefList = CommitteeEditionRefList()
+    current_edition: CommitteeEditionRef | None = None
 
     @model_validator(mode='after')
     def current_edition_in_editions(self) -> Self:
@@ -47,8 +47,8 @@ class CommitteeModel(FiberBaseModel):
 class CommitteeEditionModel(FiberBaseModel):
     collection_name: Literal["committee_edition"] = "committee_edition"
 
-    members: EntityRefList
-    functions: dict[UUID7, str]
+    members: EntityRefList = EntityRefList()
+    functions: dict[UUID7, str] = Field(default_factory=dict)
 
     remarks: str = ""
 
diff --git a/src/fiber_package/guild/guild.py b/src/fiber_package/guild/guild.py
index 664c066..26a9d61 100644
--- a/src/fiber_package/guild/guild.py
+++ b/src/fiber_package/guild/guild.py
@@ -24,12 +24,13 @@ class GuildModel(FiberBaseModel):
     description_en: str
     description_nl: str
     association_tag: str
+    active: bool = True
 
     ldap_id: int | None = None
 
-    members: EntityRefList
-    previous_members: EntityRefList
-    guild_masters: list[UUID7]
+    members: EntityRefList = EntityRefList()
+    previous_members: EntityRefList = EntityRefList()
+    guild_masters: list[UUID7] = Field(default_factory=list)
 
     last_active: dict[UUID7, date] = Field(default_factory=dict)