diff --git a/frontend_tests/puppeteer_tests/copy-and-paste.ts b/frontend_tests/puppeteer_tests/copy-and-paste.ts
index 8629edb86c..6c53ba54c7 100644
--- a/frontend_tests/puppeteer_tests/copy-and-paste.ts
+++ b/frontend_tests/puppeteer_tests/copy-and-paste.ts
@@ -12,7 +12,7 @@ async function copy_messages(
     return await page.evaluate(
         (start_message: string, end_message: string) => {
             function get_message_node(message: string): Element {
-                return $(`.message_row .message_content:contains("${CSS.escape(message)}")`).get(0);
+                return $(`.message_row .message_content:contains("${CSS.escape(message)}")`)[0];
             }
 
             // select messages from start_message to end_message
diff --git a/static/js/upload_widget.ts b/static/js/upload_widget.ts
index c6c6de8ab5..ca175597ec 100644
--- a/static/js/upload_widget.ts
+++ b/static/js/upload_widget.ts
@@ -60,7 +60,7 @@ export function build_widget(
         if (files === null || files === undefined || files.length === 0) {
             return false;
         }
-        get_file_input().get(0).files = files;
+        get_file_input()[0].files = files;
         e.preventDefault();
         return false;
     });
@@ -152,7 +152,7 @@ export function build_direct_upload_widget(
         if (files === null || files === undefined || files.length === 0) {
             return false;
         }
-        get_file_input().get(0).files = files;
+        get_file_input()[0].files = files;
         e.preventDefault();
         return false;
     });