diff --git a/tools/dhtchat.cpp b/tools/dhtchat.cpp
index e543877b4d773f85992f5717bae6e11b77e96385..bf8605a687f6dab0171e0eaac4e2ec47d65911f5 100644
--- a/tools/dhtchat.cpp
+++ b/tools/dhtchat.cpp
@@ -233,7 +233,7 @@ main(int argc, char **argv)
                     data
                 ),
                 id
-            }, [id](bool ok) {
+            }, [id](bool /*ok*/) {
                 //dht.cancelPut(room, id);
                 //std::cout << "Put signed done !" << ok << std::endl;
             });