diff --git a/api/rpk-api/firm/contract/schemas.py b/api/rpk-api/firm/contract/schemas.py
index ce5f7e6..c15c8f5 100644
--- a/api/rpk-api/firm/contract/schemas.py
+++ b/api/rpk-api/firm/contract/schemas.py
@@ -25,7 +25,7 @@ class ContractDraftCreate(Writer):
     )
     variables: List[DictionaryEntry] = Field(
         default=[],
-        format="dictionary",
+        props={"display": "dictionary"},
         title='Variables'
     )
 
@@ -50,7 +50,7 @@ class ForeignEntityRead(BaseModel):
 
 class PartyRead(BaseModel):
     signature_affixed: bool = Field(title='Signature apposée?')
-    signature_uuid: str = Field(format="signature-link", title="Lien vers signature")
+    signature_uuid: str = Field(props={"display": "signature-link"}, title="Lien vers signature")
     part: str = Field(title='Rôle')
     entity: ForeignEntityRead = Field(title='Client')
 
diff --git a/api/rpk-api/firm/template/schemas.py b/api/rpk-api/firm/template/schemas.py
index 5d9c034..99ba30b 100644
--- a/api/rpk-api/firm/template/schemas.py
+++ b/api/rpk-api/firm/template/schemas.py
@@ -21,8 +21,7 @@ class ContractTemplateCreate(Writer):
     )
     variables: List[DictionaryEntry] = Field(
         default=[],
-        format="dictionary",
-        props={"required": False},
+        props={"display": "dictionary", "required": False},
         title="Variables"
     )