diff --git a/frontend/src/ts/test/lazy-mode.ts b/frontend/src/ts/test/lazy-mode.ts
index d9c2aff26..f67e69c17 100644
--- a/frontend/src/ts/test/lazy-mode.ts
+++ b/frontend/src/ts/test/lazy-mode.ts
@@ -71,7 +71,7 @@ export function replaceAccents(
     const isUpperCase = cases[i];
     const accent = findAccent(char, additionalAccents);
 
-    if (accent) {
+    if (accent !== undefined) {
       if (isUpperCase) {
         newWordArray.push(accent.substring(0, 1).toUpperCase());
         newWordArray.push(accent.substring(1));