diff --git a/src/signatures.ml b/src/signatures.ml
index 14296846..e3994695 100644
--- a/src/signatures.ml
+++ b/src/signatures.ml
@@ -1,6 +1,8 @@
 (* TODO debug sig
    check with taler-wallet-core/src/crypto/cryptoImplementation.js
-   check unsigned-ints *)
+   unsigned-ints
+
+   can we skip defining a specific record for signatures and directly use Api records? *)
 open Hash
 module Taler_signatures = Include.Taler_signatures