diff --git a/src/calibre/db/tests/fts.py b/src/calibre/db/tests/fts.py
index c3ff7f2ccf..96c8080b1b 100644
--- a/src/calibre/db/tests/fts.py
+++ b/src/calibre/db/tests/fts.py
@@ -77,6 +77,10 @@ class FTSTest(BaseTest):
             tokenize("a*b+c"),
             [t("a", 0, 1), t('b', 2, 3), t('c', 4, 5)]
         )
+        self.ae(
+            tokenize("a(b[{^c"),
+            [t("a", 0, 1), t('b', 2, 3), t('c', 6, 7)]
+        )
         self.ae(
             tokenize("a😀smile"),
             [t("a", 0, 1), t('😀', 1, 5), t('smile', 5, 10)]