diff --git a/bookwyrm/templates/book/file_links/add_link_modal.html b/bookwyrm/templates/book/file_links/add_link_modal.html
index 114293a4..0002b82b 100644
--- a/bookwyrm/templates/book/file_links/add_link_modal.html
+++ b/bookwyrm/templates/book/file_links/add_link_modal.html
@@ -30,7 +30,7 @@
         <input
             type="text"
             name="filetype"
-            maxlength="5"
+            maxlength="50"
             class="input"
             required=""
             id="id_filetype"