diff --git a/bazarr/init.py b/bazarr/init.py
index dacc3d6ee..284159c0a 100644
--- a/bazarr/init.py
+++ b/bazarr/init.py
@@ -23,7 +23,7 @@ if settings.general.anti_captcha_provider == 'anti-captcha':
     os.environ["ANTICAPTCHA_ACCOUNT_KEY"] = settings.anticaptcha.anti_captcha_key
 elif settings.general.anti_captcha_provider == 'AntiCaptchaProxyLessPitcher':
     os.environ["ANTICAPTCHA_CLASS"] = 'DBCProxyLess'
-    os.environ["ANTICAPTCHA_ACCOUNT_KEY"] = ':'.join(settings.deathbycaptcha.username, settings.deathbycaptcha.password)
+    os.environ["ANTICAPTCHA_ACCOUNT_KEY"] = ':'.join({settings.deathbycaptcha.username, settings.deathbycaptcha.password})
 else:
     os.environ["ANTICAPTCHA_CLASS"] = ''