diff --git a/docs/src/pages/components/autocomplete/Virtualize.js b/docs/src/pages/components/autocomplete/Virtualize.js
index d8504f0d55a97c..03c876f31e3ece 100644
--- a/docs/src/pages/components/autocomplete/Virtualize.js
+++ b/docs/src/pages/components/autocomplete/Virtualize.js
@@ -115,7 +115,7 @@ const OPTIONS = Array.from(new Array(10000))
 
 const renderGroup = (params) => [
   <ListSubheader key={params.key} component="div">
-    {params.key}
+    {params.group}
   </ListSubheader>,
   params.children,
 ];
diff --git a/docs/src/pages/components/autocomplete/Virtualize.tsx b/docs/src/pages/components/autocomplete/Virtualize.tsx
index 2785133cb2abdf..92d571a60b43bd 100644
--- a/docs/src/pages/components/autocomplete/Virtualize.tsx
+++ b/docs/src/pages/components/autocomplete/Virtualize.tsx
@@ -110,7 +110,7 @@ const OPTIONS = Array.from(new Array(10000))
 
 const renderGroup = (params: RenderGroupParams) => [
   <ListSubheader key={params.key} component="div">
-    {params.key}
+    {params.group}
   </ListSubheader>,
   params.children,
 ];