diff --git a/t/cypress/integration/KohaTable/PatronSearch_spec.ts b/t/cypress/integration/KohaTable/PatronSearch_spec.ts
index 5be4883194..bffcd29580 100644
--- a/t/cypress/integration/KohaTable/PatronSearch_spec.ts
+++ b/t/cypress/integration/KohaTable/PatronSearch_spec.ts
@@ -147,7 +147,7 @@ describe("Filters", () => {
 
             cy.window().then(win => {
                 win.categories_map = patrons.reduce((map, p) => {
-                    map[p.category_id] = p.category_id;
+                    map[p.category_id.toLowerCase()] = p.category_id;
                     return map;
                 }, {});
             });