diff --git a/modules/lightning-pub.nix b/modules/lightning-pub.nix
index 6a595d4..dc26cbc 100644
--- a/modules/lightning-pub.nix
+++ b/modules/lightning-pub.nix
@@ -53,7 +53,7 @@ let
     nostrRelays = mkOption {
       type = types.str;
       default = "wss://relay.lightning.pub";
-      description = "Comma-separated list of Nostr relay WebSocket URLs.";
+      description = "Space-separated list of Nostr relay WebSocket URLs.";
     };
 
     serviceFee = {