diff --git a/src/fiber_package/action/request/list.py b/src/fiber_package/action/request/list.py
index 1a45355..eb9a131 100644
--- a/src/fiber_package/action/request/list.py
+++ b/src/fiber_package/action/request/list.py
@@ -7,10 +7,10 @@ ListPeopleResponse = list[BaseModel]
 class ListPeopleRequest(BaseModel):
     association_tag: str
     membership: Membership
-    query: str | None
+    query: str | None = None
 
 ListCommitteesResponse = list[BaseModel]
 
 class ListCommitteesRequest(BaseModel):
     association_tag: str
-    query: str | None
\ No newline at end of file
+    query: str | None = None
\ No newline at end of file
diff --git a/src/fiber_package/committee/committee.py b/src/fiber_package/committee/committee.py
index 9a7113d..f1eb2b2 100644
--- a/src/fiber_package/committee/committee.py
+++ b/src/fiber_package/committee/committee.py
@@ -24,6 +24,7 @@ class CommitteeModel(FiberBaseModel):
 
     association: AssociationRef
 
+    short_name: str
     full_name_en: str
     full_name_nl: str
     description_en: str = ""