diff --git a/cordova/plugins/Contacts.d.ts b/cordova/plugins/Contacts.d.ts
index f054c12d0..afc3aa903 100644
--- a/cordova/plugins/Contacts.d.ts
+++ b/cordova/plugins/Contacts.d.ts
@@ -32,7 +32,7 @@ interface Contacts {
      */
     find(fields: string[],
         onSuccess: (contacts: Contact[]) => void,
-        onError: (error: ContactError) => void,
+        onError?: (error: ContactError) => void,
         options?: ContactFindOptions): void;
 }