diff --git a/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi b/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
index 78d4c49512..7174ba6165 100644
--- a/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
+++ b/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
@@ -1646,8 +1646,8 @@ def new_IfcBaseClass(schema_identifier: str, name: str) -> entity_instance: ...
 def open(fn: str, readonly: bool = False, logger=None) -> file: ...
 def polygons_to_svg(*args): ...
 def read(data): ...
-def register_schema(arg1): ...
-def schema_by_name(arg1: str) -> schema_definition: ...
+def register_schema(schema: schema_definition) -> None: ...
+def schema_by_name(schema_name: str) -> schema_definition: ...
 def schema_names() -> tuple[str, ...]: ...
 def serialise(schema_name, shape_str, advanced=True): ...
 def set_feature(x, v): ...