From 5a5857bafba66edc9a2dc9907762e1b2fe27d3fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20F=C3=A4hrmann?= <mike_faehrmann@web.de>
Date: Tue, 26 Aug 2025 09:08:49 +0200
Subject: [PATCH] [common] prevent exception when using empty 'user-agent'
 (#8116)

use '"headers": {"User-Agent": ""}' to send an empty User-Agent header
---
 gallery_dl/extractor/common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index 719fc62c..568f435a 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -462,7 +462,7 @@ class Extractor():
                 headers["Referer"] = self.root + "/"
 
         custom_ua = self.config("user-agent")
-        if custom_ua is None or custom_ua == "auto":
+        if not custom_ua or custom_ua == "auto":
             pass
         elif custom_ua == "browser":
             headers["User-Agent"] = _browser_useragent(None)