diff --git a/get.go b/get.go
index 54d91bd..42c28ca 100644
--- a/get.go
+++ b/get.go
@@ -77,7 +77,7 @@ func AuthRequest(r *http.Request, conn *websocket.Conn) error {
 	}
 
 	if err := ValidateChallenge(secret, resp); err != nil {
-		return fmt.Errorf("error validating challenge: %w", err)
+		return fmt.Errorf("error validating challenge: %w (response: %s)", err, string(resp))
 	}
 
 	return nil