diff --git a/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py b/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
index 6eaa324b82..41bc45fdd5 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/project/create_file.py
@@ -51,12 +51,12 @@ def create_file(version: ifcopenshell.util.schema.IFC_SCHEMA = "IFC4") -> ifcope
         # ... and off we go!
     """
     file = ifcopenshell.file(schema=version)
-    file.wrapped_data.header.file_name.name = "/dev/null"  # Hehehe
-    file.wrapped_data.header.file_name.time_stamp = (
+    file.header.file_name.name = "/dev/null"  # Hehehe
+    file.header.file_name.time_stamp = (
         datetime.datetime.utcnow().replace(tzinfo=datetime.timezone.utc).astimezone().replace(microsecond=0).isoformat()
     )
-    file.wrapped_data.header.file_name.preprocessor_version = "IfcOpenShell {}".format(ifcopenshell.version)
-    file.wrapped_data.header.file_name.originating_system = "IfcOpenShell {}".format(ifcopenshell.version)
-    file.wrapped_data.header.file_name.authorization = "Nobody"
-    file.wrapped_data.header.file_description.description = ("ViewDefinition[DesignTransferView]",)
+    file.header.file_name.preprocessor_version = "IfcOpenShell {}".format(ifcopenshell.version)
+    file.header.file_name.originating_system = "IfcOpenShell {}".format(ifcopenshell.version)
+    file.header.file_name.authorization = "Nobody"
+    file.header.file_description.description = ("ViewDefinition[DesignTransferView]",)
     return file
diff --git a/src/ifcopenshell-python/ifcopenshell/file.py b/src/ifcopenshell-python/ifcopenshell/file.py
index 3e44b0d1e0..16444e3702 100644
--- a/src/ifcopenshell-python/ifcopenshell/file.py
+++ b/src/ifcopenshell-python/ifcopenshell/file.py
@@ -793,3 +793,9 @@ class file:
 
     def to_string(self) -> str:
         return self.wrapped_data.to_string()
+
+    @property
+    def header(self):
+        h = self.wrapped_data.header()
+        object.__setattr__(h, "file_ref", lambda inst: entity_instance.wrap_value(inst, file=self))
+        return h
diff --git a/src/ifcopenshell-python/test/api/project/test_create_file.py b/src/ifcopenshell-python/test/api/project/test_create_file.py
index 8b952777cf..8456e2fe27 100644
--- a/src/ifcopenshell-python/test/api/project/test_create_file.py
+++ b/src/ifcopenshell-python/test/api/project/test_create_file.py
@@ -26,9 +26,9 @@ class TestCreateFile(test.bootstrap.IFC4):
         assert ifc.schema == "IFC4"
         ifc = ifcopenshell.api.project.create_file(version="IFC2X3")
         assert ifc.schema == "IFC2X3"
-        assert ifc.wrapped_data.header.file_name.name == "/dev/null"
-        assert ifc.wrapped_data.header.file_name.time_stamp
-        assert "IfcOpenShell" in ifc.wrapped_data.header.file_name.preprocessor_version
-        assert "IfcOpenShell" in ifc.wrapped_data.header.file_name.originating_system
-        assert ifc.wrapped_data.header.file_name.authorization == "Nobody"
-        assert ifc.wrapped_data.header.file_description.description == ("ViewDefinition[DesignTransferView]",)
+        assert ifc.header.file_name.name == "/dev/null"
+        assert ifc.header.file_name.time_stamp
+        assert "IfcOpenShell" in ifc.header.file_name.preprocessor_version
+        assert "IfcOpenShell" in ifc.header.file_name.originating_system
+        assert ifc.header.file_name.authorization == "Nobody"
+        assert ifc.header.file_description.description == ("ViewDefinition[DesignTransferView]",)
diff --git a/src/ifcopenshell-python/test/file_gc.py b/src/ifcopenshell-python/test/file_gc.py
index 8cff9a7e38..f28256a3d0 100644
--- a/src/ifcopenshell-python/test/file_gc.py
+++ b/src/ifcopenshell-python/test/file_gc.py
@@ -111,7 +111,7 @@ def test_bug_2486_a():
 
 def test_bug_2486_b():
     file = ifcopenshell.template.create()
-    file.wrapped_data.header.file_name.name = "myfile.ifc"
+    file.header.file_name.name = "myfile.ifc"
 
 
 if __name__ == "__main__":
diff --git a/src/ifcparse/Header_section_schema-schema.cpp b/src/ifcparse/Header_section_schema-schema.cpp
index 4116491c06..426f4f551c 100644
--- a/src/ifcparse/Header_section_schema-schema.cpp
+++ b/src/ifcparse/Header_section_schema-schema.cpp
@@ -24,7 +24,7 @@ class HEADER_SECTION_SCHEMA_instance_factory : public IfcParse::instance_factory
 
 IfcParse::schema_definition* HEADER_SECTION_SCHEMA_populate_schema() {
 
-const std::string strings[] = {"schema_name"s,"time_stamp_text"s,"file_description"s,"file_name"s,"file_schema"s,"description"s,"implementation_level"s,"name"s,"time_stamp"s,"author"s,"organization"s,"preprocessor_version"s,"originating_system"s,"authorisation"s,"schema_identifiers"s,"HEADER_SECTION_SCHEMA"s};
+const std::string strings[] = {"schema_name"s,"time_stamp_text"s,"file_description"s,"file_name"s,"file_schema"s,"description"s,"implementation_level"s,"name"s,"time_stamp"s,"author"s,"organization"s,"preprocessor_version"s,"originating_system"s,"authorization"s,"schema_identifiers"s,"HEADER_SECTION_SCHEMA"s};
 
     HEADER_SECTION_SCHEMA_types[3] = new type_declaration(strings[0], 3, new simple_type(simple_type::string_type));
     HEADER_SECTION_SCHEMA_types[4] = new type_declaration(strings[1], 4, new simple_type(simple_type::string_type));
diff --git a/src/ifcparse/Header_section_schema.cpp b/src/ifcparse/Header_section_schema.cpp
index c7fc03ef00..411aaf0ba6 100644
--- a/src/ifcparse/Header_section_schema.cpp
+++ b/src/ifcparse/Header_section_schema.cpp
@@ -55,14 +55,14 @@ std::string Header_section_schema::file_name::preprocessor_version() const {  st
 void Header_section_schema::file_name::setpreprocessor_version(std::string v) { set_attribute_value(4, v);if constexpr (false)unset_attribute_value(4); }
 std::string Header_section_schema::file_name::originating_system() const {  std::string v = get_attribute_value(5); return v; }
 void Header_section_schema::file_name::setoriginating_system(std::string v) { set_attribute_value(5, v);if constexpr (false)unset_attribute_value(5); }
-std::string Header_section_schema::file_name::authorisation() const {  std::string v = get_attribute_value(6); return v; }
-void Header_section_schema::file_name::setauthorisation(std::string v) { set_attribute_value(6, v);if constexpr (false)unset_attribute_value(6); }
+std::string Header_section_schema::file_name::authorization() const {  std::string v = get_attribute_value(6); return v; }
+void Header_section_schema::file_name::setauthorization(std::string v) { set_attribute_value(6, v);if constexpr (false)unset_attribute_value(6); }
 
 
 const IfcParse::entity& Header_section_schema::file_name::declaration() const { return *((IfcParse::entity*)HEADER_SECTION_SCHEMA_types[1]); }
 const IfcParse::entity& Header_section_schema::file_name::Class() { return *((IfcParse::entity*)HEADER_SECTION_SCHEMA_types[1]); }
 Header_section_schema::file_name::file_name(IfcEntityInstanceData&& e) : IfcUtil::IfcBaseEntity(std::move(e)) { }
-Header_section_schema::file_name::file_name(std::string v1_name, std::string v2_time_stamp, std::vector< std::string > /*[1:?]*/ v3_author, std::vector< std::string > /*[1:?]*/ v4_organization, std::string v5_preprocessor_version, std::string v6_originating_system, std::string v7_authorisation) : IfcUtil::IfcBaseEntity(IfcEntityInstanceData(in_memory_attribute_storage(7))) { set_attribute_value(0, (v1_name));set_attribute_value(1, (v2_time_stamp));set_attribute_value(2, (v3_author));set_attribute_value(3, (v4_organization));set_attribute_value(4, (v5_preprocessor_version));set_attribute_value(5, (v6_originating_system));set_attribute_value(6, (v7_authorisation));; populate_derived(); }
+Header_section_schema::file_name::file_name(std::string v1_name, std::string v2_time_stamp, std::vector< std::string > /*[1:?]*/ v3_author, std::vector< std::string > /*[1:?]*/ v4_organization, std::string v5_preprocessor_version, std::string v6_originating_system, std::string v7_authorization) : IfcUtil::IfcBaseEntity(IfcEntityInstanceData(in_memory_attribute_storage(7))) { set_attribute_value(0, (v1_name));set_attribute_value(1, (v2_time_stamp));set_attribute_value(2, (v3_author));set_attribute_value(3, (v4_organization));set_attribute_value(4, (v5_preprocessor_version));set_attribute_value(5, (v6_originating_system));set_attribute_value(6, (v7_authorization));; populate_derived(); }
 
 // Function implementations for file_schema
 std::vector< std::string > /*[1:?]*/ Header_section_schema::file_schema::schema_identifiers() const {  std::vector< std::string > /*[1:?]*/ v = get_attribute_value(0); return v; }
diff --git a/src/ifcparse/Header_section_schema.h b/src/ifcparse/Header_section_schema.h
index 80237a627d..efce31a5f2 100644
--- a/src/ifcparse/Header_section_schema.h
+++ b/src/ifcparse/Header_section_schema.h
@@ -74,12 +74,12 @@ public:
     void setpreprocessor_version(std::string v);
     std::string originating_system() const;
     void setoriginating_system(std::string v);
-    std::string authorisation() const;
-    void setauthorisation(std::string v);
+    std::string authorization() const;
+    void setauthorization(std::string v);
         virtual const IfcParse::entity& declaration() const;
     static const IfcParse::entity& Class();
     file_name (IfcEntityInstanceData&& e);
-    file_name (std::string v1_name, std::string v2_time_stamp, std::vector< std::string > /*[1:?]*/ v3_author, std::vector< std::string > /*[1:?]*/ v4_organization, std::string v5_preprocessor_version, std::string v6_originating_system, std::string v7_authorisation);
+    file_name (std::string v1_name, std::string v2_time_stamp, std::vector< std::string > /*[1:?]*/ v3_author, std::vector< std::string > /*[1:?]*/ v4_organization, std::string v5_preprocessor_version, std::string v6_originating_system, std::string v7_authorization);
     typedef aggregate_of< file_name > list;
 };
 
diff --git a/src/ifcparse/IfcParse.cpp b/src/ifcparse/IfcParse.cpp
index 747e834f03..bb792a1bfe 100644
--- a/src/ifcparse/IfcParse.cpp
+++ b/src/ifcparse/IfcParse.cpp
@@ -2590,7 +2590,7 @@ void IfcFile::setDefaultHeaderValues() {
     header().file_name()->setorganization(string_vector);
     header().file_name()->setpreprocessor_version("IfcOpenShell " IFCOPENSHELL_VERSION);
     header().file_name()->setoriginating_system("IfcOpenShell " IFCOPENSHELL_VERSION);
-    header().file_name()->setauthorisation(empty_string);
+    header().file_name()->setauthorization(empty_string);
 
     header().file_schema()->setschema_identifiers(schema_identifiers);
 }
diff --git a/src/ifcparse/parse_ifcxml.cpp b/src/ifcparse/parse_ifcxml.cpp
index 56151626b4..26f0552075 100644
--- a/src/ifcparse/parse_ifcxml.cpp
+++ b/src/ifcparse/parse_ifcxml.cpp
@@ -344,7 +344,7 @@ static void process_characters(void* user, const xmlChar* character, int len) {
         } else if (tagname == "originating_system") {
             header.file_name()->setoriginating_system(txt);
         } else if (tagname == "authorization") {
-            header.file_name()->setauthorisation(txt);
+            header.file_name()->setauthorization(txt);
         } else if (tagname == "documentation") {
             header.file_description()->setdescription({txt});
         } else {
diff --git a/src/ifcwrap/IfcParseWrapper.i b/src/ifcwrap/IfcParseWrapper.i
index 8699151993..bab1cbb89b 100644
--- a/src/ifcwrap/IfcParseWrapper.i
+++ b/src/ifcwrap/IfcParseWrapper.i
@@ -229,9 +229,7 @@ static IfcUtil::ArgumentType helper_fn_attribute_type(const IfcUtil::IfcBaseClas
 	}
 
 	%pythoncode %{
-        # Hide the getters with read-only property implementations
-        header = property(header)
-        schema = property(schema_name)
+		schema = property(schema_name)
 	%}
 }
 
@@ -587,9 +585,10 @@ static IfcUtil::ArgumentType helper_fn_attribute_type(const IfcUtil::IfcBaseClas
 
 	%pythoncode %{
         # Hide the getters with read-only property implementations
-        file_description = property(file_description_py)
-        file_name = property(file_name_py)
-        file_schema = property(file_schema_py)
+		# self.file_ref is set in ifcopenshell.file.header()
+        file_description = property(lambda self: self.file_ref(self.file_description_py()))
+        file_name = property(lambda self: self.file_ref(self.file_name_py()))
+        file_schema = property(lambda self: self.file_ref(self.file_schema_py()))
 	%}
 };
 
diff --git a/src/serializers/schema_dependent/XmlSerializer.cpp b/src/serializers/schema_dependent/XmlSerializer.cpp
index 87b83693d6..bd9740eac0 100644
--- a/src/serializers/schema_dependent/XmlSerializer.cpp
+++ b/src/serializers/schema_dependent/XmlSerializer.cpp
@@ -624,7 +624,7 @@ void POSTFIX_SCHEMA(XmlSerializer)::finalize() {
     }
     try {
 		// @nb inconsistent spelling
-        header.put("file_name.authorization", file->header().file_name()->authorisation());
+        header.put("file_name.authorization", file->header().file_name()->authorization());
     }
     catch (const IfcParse::IfcException& ex) {
         std::stringstream ss;