diff --git a/static/skin/index.js b/static/skin/index.js
index 81ddc971..de047f59 100644
--- a/static/skin/index.js
+++ b/static/skin/index.js
@@ -46,10 +46,14 @@
         return (url);
     }
 
-    function setCookie(cookieName, cookieValue) {
-        const date = new Date();
-        date.setTime(date.getTime() + oneDayDelta);
-        document.cookie = `${cookieName}=${cookieValue};expires=${date.toUTCString()};sameSite=Strict`;
+    function setCookie(cookieName, cookieValue, ttl) {
+        let exp = "";
+        if ( ttl ) {
+          const date = new Date();
+          date.setTime(date.getTime() + ttl);
+          exp = `expires=${date.toUTCString()};`;
+        }
+        document.cookie = `${cookieName}=${cookieValue};${exp}sameSite=Strict`;
     }
 
     function getCookie(cookieName) {
@@ -375,7 +379,7 @@
         if (filterType) {
             params.set(filterType, filterValue);
             window.history.pushState({}, null, `?${params.toString()}`);
-            setCookie(filterCookieName, params.toString());
+            setCookie(filterCookieName, params.toString(), oneDayDelta);
         }
         updateFilterColors();
         updateFeedLink();
@@ -520,7 +524,7 @@
             }
         }
         updateFeedLink();
-        setCookie(filterCookieName, params.toString());
+        setCookie(filterCookieName, params.toString(), oneDayDelta);
     };
 
     // required by i18n.js:setUserLanguage()
diff --git a/test/server.cpp b/test/server.cpp
index 17eaaaf0..8e1393c1 100644
--- a/test/server.cpp
+++ b/test/server.cpp
@@ -63,7 +63,7 @@ const ResourceCollection resources200Compressible{
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/index.css" },
   { STATIC_CONTENT,  "/ROOT%23%3F/skin/index.css?cacheid=ac5767d8" },
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/index.js" },
-  { STATIC_CONTENT,  "/ROOT%23%3F/skin/index.js?cacheid=c333bdba" },
+  { STATIC_CONTENT,  "/ROOT%23%3F/skin/index.js?cacheid=2f15ed7d" },
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/iso6391To3.js" },
   { STATIC_CONTENT,  "/ROOT%23%3F/skin/iso6391To3.js?cacheid=ecde2bb3" },
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/isotope.pkgd.min.js" },
@@ -284,7 +284,7 @@ R"EXPECTEDRESULT(      href="/ROOT%23%3F/skin/index.css?cacheid=ac5767d8"
     <script type="text/javascript" src="/ROOT%23%3F/skin/languages.js?cacheid=fe100348" defer></script>
     <script src="/ROOT%23%3F/skin/isotope.pkgd.min.js?cacheid=2e48d392" defer></script>
     <script src="/ROOT%23%3F/skin/iso6391To3.js?cacheid=ecde2bb3"></script>
-    <script type="text/javascript" src="/ROOT%23%3F/skin/index.js?cacheid=c333bdba" defer></script>
+    <script type="text/javascript" src="/ROOT%23%3F/skin/index.js?cacheid=2f15ed7d" defer></script>
       <img src="/ROOT%23%3F/skin/feed.png?cacheid=56a672b1" class="feedLogo" alt="Library OPDS Feed" aria-label="Library OPDS Feed" title="Library OPDS Feed">
 )EXPECTEDRESULT"
     },