From 5b94c340c072382b686c1f90fdcc6bac4ce9d503 Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Sat, 16 May 2020 14:40:22 +0200
Subject: [PATCH] Fix Filters.regex failing in case the value is None

---
 pyrogram/client/filters/filters.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pyrogram/client/filters/filters.py b/pyrogram/client/filters/filters.py
index d740d3c7..19218813 100644
--- a/pyrogram/client/filters/filters.py
+++ b/pyrogram/client/filters/filters.py
@@ -323,7 +323,8 @@ class Filters:
             else:
                 raise ValueError("Regex filter doesn't work with {}".format(type(update)))
 
-            update.matches = list(flt.p.finditer(value)) or None
+            if value:
+                update.matches = list(flt.p.finditer(value)) or None
 
             return bool(update.matches)