diff --git a/bookwyrm/templates/book/format_filter.html b/bookwyrm/templates/book/format_filter.html
index 05275528..c722b24f 100644
--- a/bookwyrm/templates/book/format_filter.html
+++ b/bookwyrm/templates/book/format_filter.html
@@ -4,7 +4,7 @@
 {% block filter %}
 <label class="label is-block" for="id_format">{% trans "Format:" %}</label>
 <div class="select">
-    <select id="format" name="format">
+    <select id="id_format" name="format">
         <option value="">{% trans "Any" %}</option>
         {% for format in formats %}{% if format %}
         <option value="{{ format }}" {% if request.GET.format == format %}selected{% endif %}>
diff --git a/bookwyrm/templates/book/language_filter.html b/bookwyrm/templates/book/language_filter.html
index c6798a9b..d9051fd8 100644
--- a/bookwyrm/templates/book/language_filter.html
+++ b/bookwyrm/templates/book/language_filter.html
@@ -4,7 +4,7 @@
 {% block filter %}
 <label class="label is-block" for="id_language">{% trans "Language:" %}</label>
 <div class="select">
-    <select id="language" name="language">
+    <select id="id_language" name="language">
         <option value="">{% trans "Any" %}</option>
         {% for language in languages %}
         <option value="{{ language }}" {% if request.GET.language == language %}selected{% endif %}>