diff --git a/syncplay/protocols.py b/syncplay/protocols.py
index ed7590e..a7f1a07 100755
--- a/syncplay/protocols.py
+++ b/syncplay/protocols.py
@@ -88,6 +88,8 @@ class SyncClientProtocol(JSONCommandProtocol):
         try:
             if "Invalid DNS-ID" in str(reason.value):
                 self._client._serverSupportsTLS = False
+            elif "certificate verify failed" in str(reason.value):
+                self._client._serverSupportsTLS = False
         except:
             pass
         self._client.destroyProtocol()