diff --git a/bookwyrm/static/js/autocomplete.js b/bookwyrm/static/js/autocomplete.js
index a98cd9634..6836d356d 100644
--- a/bookwyrm/static/js/autocomplete.js
+++ b/bookwyrm/static/js/autocomplete.js
@@ -111,6 +111,10 @@ const tries = {
             },
         },
         f: {
+            b: {
+                2: "FB2",
+                3: "FB3",
+            },
             l: {
                 a: {
                     c: "FLAC",