1 files changed, 2 insertions, 3 deletions
diff --git a/iso8601/iso8601.py b/iso8601/iso8601.py
index b1a57e7..b72d7b4 100644
--- a/iso8601/iso8601.py
+++ b/iso8601/iso8601.py
@@ -53,10 +53,9 @@ ISO8601_REGEX = re.compile(
                     (?P<tz_minute>[0-9]{2}){0,1}
                 )
             ){0,1}
-        )
-        |
-        $
+        ){0,1}
     )
+    $
     """,
     re.VERBOSE
 )