diff --git a/libs/subliminal_patch/providers/subs4free.py b/libs/subliminal_patch/providers/subs4free.py
index e25e1a7e2..9c7e92708 100644
--- a/libs/subliminal_patch/providers/subs4free.py
+++ b/libs/subliminal_patch/providers/subs4free.py
@@ -84,7 +84,7 @@ class Subs4FreeProvider(Provider):
 
     def initialize(self):
         self.session = Session()
-        self.session.headers['User-Agent'] = 'Subliminal/{}'.format(__short_version__)
+        self.session.headers['User-Agent'] = os.environ.get("SZ_USER_AGENT", "Sub-Zero/2")
 
     def terminate(self):
         self.session.close()