diff --git a/lnd-signet/lnd.conf b/lnd-signet/lnd.conf
index ed7e96a49..3311526bb 100644
--- a/lnd-signet/lnd.conf
+++ b/lnd-signet/lnd.conf
@@ -10,6 +10,7 @@ accept-keysend=true
 accept-amp=true
 allow-circular-route=true
 numgraphsyncpeers=3
+tlsextradomain=playground-lnd
 [Bitcoin]
 bitcoin.active=true
 bitcoin.mainnet=false