diff --git a/packages/material-ui/src/ListItemAvatar/ListItemAvatar.d.ts b/packages/material-ui/src/ListItemAvatar/ListItemAvatar.d.ts
index 3558c8b92cb98d..ff9c5e6d442591 100644
--- a/packages/material-ui/src/ListItemAvatar/ListItemAvatar.d.ts
+++ b/packages/material-ui/src/ListItemAvatar/ListItemAvatar.d.ts
@@ -1,6 +1,8 @@
 import { StandardProps } from '..';
 
-export interface ListItemAvatarProps extends StandardProps<{}, ListItemAvatarClassKey> {}
+export interface ListItemAvatarProps extends StandardProps<{}, ListItemAvatarClassKey> {
+  children: React.ReactElement;
+}
 
 export type ListItemAvatarClassKey = 'root' | 'icon';