diff --git a/types/auth0-lock/index.d.ts b/types/auth0-lock/index.d.ts
index dd3e6aa7ee..93305bfd1f 100644
--- a/types/auth0-lock/index.d.ts
+++ b/types/auth0-lock/index.d.ts
@@ -118,7 +118,7 @@ interface Auth0LockConstructorOptions {
     auth?: Auth0LockAuthOptions;
     autoclose?: boolean;
     autofocus?: boolean;
-    avatar?: Auth0LockAvatarOptions;
+    avatar?: Auth0LockAvatarOptions | null;
     clientBaseUrl?: string;
     closable?: boolean;
     configurationBaseUrl?: string;