diff --git a/napalm_yealink/yealink.py b/napalm_yealink/yealink.py
index 2a8938b..4e848a6 100644
--- a/napalm_yealink/yealink.py
+++ b/napalm_yealink/yealink.py
@@ -38,7 +38,7 @@ class YealinkDriver(AccessPointDriver):
         "80:5E:0C",  # YEALINK(XIAMEN) NETWORK TECHNOLOGY — IEEE, verifiziert an T58V
     ]
     HTTP_FINGERPRINT = [
-        FingerprintRule("yealink", weight=10.0, mandatory=True),
+        FingerprintRule("yealink", weight=10.0),  # nicht mandatory: Yealink/api redirect hat kein "yealink" im Body
         FingerprintRule("sip-t", weight=5.0),
         FingerprintRule("sip-w", weight=5.0),
         FingerprintRule("sip-cp", weight=5.0),