From 6766b2b19e4d7537064a0791d50534f644ba0144 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Fri, 17 Apr 2020 16:25:04 +0200
Subject: [PATCH] Fix #1645 -- Allow one-letter event slugs

---
 src/pretix/base/models/event.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pretix/base/models/event.py b/src/pretix/base/models/event.py
index acd63b5bb..133459aec 100644
--- a/src/pretix/base/models/event.py
+++ b/src/pretix/base/models/event.py
@@ -294,7 +294,7 @@ class Event(EventMixin, LoggedModel):
             "This will be used in URLs, order codes, invoice numbers, and bank transfer references."),
         validators=[
             RegexValidator(
-                regex="^[a-zA-Z0-9][a-zA-Z0-9.-]+$",
+                regex="^[a-zA-Z0-9][a-zA-Z0-9.-]*$",
                 message=_("The slug may only contain letters, numbers, dots and dashes."),
             ),
             EventSlugBanlistValidator()