diff --git a/nip46/static-key-signer.go b/nip46/static-key-signer.go
index 5a9d4a0..314b5ff 100644
--- a/nip46/static-key-signer.go
+++ b/nip46/static-key-signer.go
@@ -234,6 +234,7 @@ func (p *StaticKeySigner) HandleRequest(event *nostr.Event) (
 		result = plaintext
 	case "ping":
 		result = "pong"
+		harmless = true
 	default:
 		return req, resp, eventResponse,
 			fmt.Errorf("unknown method '%s'", req.Method)