diff --git a/src/pages/partials/cards.astro b/src/pages/partials/cards.astro
index 440604c..b414d57 100644
--- a/src/pages/partials/cards.astro
+++ b/src/pages/partials/cards.astro
@@ -37,13 +37,13 @@ const filterChecked = (field: string, value: string) => {
 };
 
 const filterBy = Object.entries(filters).map(([field, values]) => {
-    return `${field}:=[${values.join(',')}]`;
+    return `${field}:=[${values.map(v => '`'+v+'`').join(',')}]`;
 }).join(' && ');
 
 const facetFilter = (facet:string) => {
     const otherFilters = Object.entries(filters)
         .filter(([field]) => field !== facet)
-        .map(([field, values]) => `${field}:=[${values.join(',')}]`)
+        .map(([field, values]) => `${field}:=[${values.map(v => '`'+v+'`').join(',')}]`)
         .join(' && ');
     return `sealed:false${otherFilters ? ` && ${otherFilters}` : ''}`;
 };