diff --git a/lib/philomena_web/templates/layout/_header.html.slime b/lib/philomena_web/templates/layout/_header.html.slime
index eb92e8d9..1ced4635 100644
--- a/lib/philomena_web/templates/layout/_header.html.slime
+++ b/lib/philomena_web/templates/layout/_header.html.slime
@@ -14,6 +14,11 @@ header.header
     form.header__search.flex.flex--no-wrap.flex--centered action="/search" method="get"
       input.input.header__input.header__input--search#q name="q" title="For terms all required, separate with ',' or 'AND'; also supports 'OR' for optional terms and '-' or 'NOT' for negation. Search with a blank query for more options or click the ? for syntax help." value=(assigns[:search_query] || @conn.params["q"]) placeholder="Search" autocapitalize="none"
 
+      = if present?(@conn.params["sf"]) do
+        input type="hidden" name="sf" value=@conn.params["sf"]
+      = if present?(@conn.params["sd"]) do
+        input type="hidden" name="sd" value=@conn.params["sd"]
+
       button.header__search__button type="submit" title='Search'
         i.fa-embedded--search
       a.header__search__button href="/search/reverse" title="Search using an image"