diff --git a/src/util/umlaut.test.c b/src/util/umlaut.test.c
index d903c6fea..280e83e3c 100644
--- a/src/util/umlaut.test.c
+++ b/src/util/umlaut.test.c
@@ -104,6 +104,7 @@ static void test_leak(CuTest *tc) {
     token.i = 42;
     addtoken(&tokens, "NW", token);
     addtoken(&tokens, "northwest", token);
+    CuAssertIntEquals(tc, E_TOK_SUCCESS, findtoken(tokens, "n", &token));
     freetokens(tokens);
 }