diff --git a/src/caosadvancedtools/models/parser.py b/src/caosadvancedtools/models/parser.py
index 44d212fb976154d264221f5c19cbe8b0feae89bc..4df1c0a290fea499f936bbfad70b8d67455b2f2b 100644
--- a/src/caosadvancedtools/models/parser.py
+++ b/src/caosadvancedtools/models/parser.py
@@ -792,9 +792,6 @@ class JsonSchemaParser(Parser):
             ent = self._treat_record_type(elt, name)
         elif elt["type"] == "array":
             ent, force_list = self._treat_list(elt, name)
-        elif elt["type"] == "null":
-            # null
-            return None, force_list
         else:
             raise NotImplementedError(
                 f"Cannot parse items of type '{elt['type']}' (yet).")