diff --git a/types/gsi/gsi-tests.ts b/types/gsi/gsi-tests.ts
index c9ffdcb3d082e6..25a12ddafaac6d 100644
--- a/types/gsi/gsi-tests.ts
+++ b/types/gsi/gsi-tests.ts
@@ -41,7 +41,7 @@ google.accounts.id.prompt(notification => {
 /**
  * @see https://developers.google.com/identity/gsi/web/reference/js-reference#google.accounts.id.renderButton
  */
-google.accounts.id.renderButton("#parent-element", { type: "standard" });
+google.accounts.id.renderButton(document.getElementById("#parent-element")!, { type: "standard" });
 
 /**
  * @see https://developers.google.com/identity/gsi/web/reference/js-reference#google.accounts.id.disableAutoSelect
diff --git a/types/gsi/index.d.ts b/types/gsi/index.d.ts
index 597e1beda93f72..ee69adb2902cfb 100644
--- a/types/gsi/index.d.ts
+++ b/types/gsi/index.d.ts
@@ -175,7 +175,7 @@ declare namespace google.accounts.id {
      * @param parent The parent element onto which to mount the Sign In With Google button.
      * @param options Button configuration options.
      */
-    function renderButton(parent: string, options: GsiButtonConfiguration): void;
+    function renderButton(parent: HTMLElement, options: GsiButtonConfiguration): void;
 
     /**
      * When the user signs out of your website, you need to call the method google.accounts.id.disableAutoSelect to record the status in cookies. This prevents a UX dead loop.