diff --git a/tests/test_utils_string.py b/tests/test_utils_string.py
index 607b8d0fa..0e1c44f2b 100644
--- a/tests/test_utils_string.py
+++ b/tests/test_utils_string.py
@@ -31,6 +31,7 @@ class TestUtilsString(unittest.IsolatedAsyncioTestCase):
         assert match_endofsentence("Valid scientific notation 1.23e4.") == 33
         assert match_endofsentence("Valid scientific notation 0.e4.") == 31
         assert match_endofsentence("It still early, it's 3:00 a.m.") == 30
+        assert match_endofsentence("That'll be $20.00.") == 18
         assert not match_endofsentence("This is not a sentence")
         assert not match_endofsentence("This is not a sentence,")
         assert not match_endofsentence("This is not a sentence, ")