diff --git a/sphinx/builders/changes.py b/sphinx/builders/changes.py
index 918ed3bcaee..49cab2c7a8c 100644
--- a/sphinx/builders/changes.py
+++ b/sphinx/builders/changes.py
@@ -61,10 +61,7 @@ def write_documents(self, _docnames: Set[str]) -> None:
             return
         logger.info(bold(__('writing summary file...')))
         for changeset in changesets:
-            if isinstance(changeset.descname, tuple):
-                descname = changeset.descname[0]
-            else:
-                descname = changeset.descname
+            descname = changeset.descname
             ttext = self.typemap[changeset.type]
             context = changeset.content.replace('\n', ' ')
             if descname and changeset.docname.startswith('c-api'):
diff --git a/sphinx/directives/__init__.py b/sphinx/directives/__init__.py
index 181c6f81a07..c45232c92e7 100644
--- a/sphinx/directives/__init__.py
+++ b/sphinx/directives/__init__.py
@@ -282,7 +282,11 @@ def run(self) -> list[Node]:
 
         if self.names:
             # needed for association of version{added,changed} directives
-            self.env.temp_data['object'] = self.names[0]
+            object_name: ObjDescT = self.names[0]
+            if isinstance(object_name, tuple):
+                self.env.temp_data['object'] = str(object_name[0])
+            else:
+                self.env.temp_data['object'] = str(object_name)
         self.before_content()
         content_children = self.parse_content_to_nodes(allow_section_headings=True)
         content_node = addnodes.desc_content('', *content_children)