diff --git a/src/serena/tools/jetbrains_plugin_client.py b/src/serena/tools/jetbrains_plugin_client.py
index 7bf9894b..0cd236f3 100644
--- a/src/serena/tools/jetbrains_plugin_client.py
+++ b/src/serena/tools/jetbrains_plugin_client.py
@@ -220,14 +220,16 @@ class JetBrainsPluginClient(ToStringMixin):
         request_data = {"namePath": name_path, "relativePath": relative_path, "includeQuickInfo": include_quick_info}
         return cast(jb.SymbolCollectionResponse, self._make_request("POST", "/findReferences", request_data))
 
-    def get_symbols_overview(self, relative_path: str, depth: int, include_file_documentation: bool = False) -> jb.SymbolCollectionResponse:
+    def get_symbols_overview(
+        self, relative_path: str, depth: int, include_file_documentation: bool = False
+    ) -> jb.GetSymbolsOverviewResponse:
         """
         :param relative_path: the relative path to a source file
         :param depth: the depth of children to include (0 = no children)
         :param include_file_documentation: whether to include the file's documentation string (if any)
         """
         request_data = {"relativePath": relative_path, "depth": depth, "includeFileDocumentation": include_file_documentation}
-        return cast(jb.SymbolCollectionResponse, self._make_request("POST", "/getSymbolsOverview", request_data))
+        return cast(jb.GetSymbolsOverviewResponse, self._make_request("POST", "/getSymbolsOverview", request_data))
 
     def get_supertypes(
         self,
diff --git a/src/serena/tools/jetbrains_types.py b/src/serena/tools/jetbrains_types.py
index c19ba4e6..f71874c3 100644
--- a/src/serena/tools/jetbrains_types.py
+++ b/src/serena/tools/jetbrains_types.py
@@ -32,6 +32,9 @@ class SymbolDTO(TypedDict):
 
 class SymbolCollectionResponse(TypedDict):
     symbols: list[SymbolDTO]
+
+
+class GetSymbolsOverviewResponse(SymbolCollectionResponse):
     documentation: NotRequired[str]
     """Docstring of the collection (if applicable - usually present only if the collection is from a single file), 
     as HTML string."""