diff --git a/pallets/duniter-account/src/lib.rs b/pallets/duniter-account/src/lib.rs
index 00caa3289c40035cb22cea2d05a45ca315a3f4a0..9f972a0330ae5bc84b0bff42243aceb18e583e50 100644
--- a/pallets/duniter-account/src/lib.rs
+++ b/pallets/duniter-account/src/lib.rs
@@ -111,8 +111,7 @@ pub mod pallet {
             // ensure no duplicate
             let endowed_accounts = self
                 .accounts
-                .iter()
-                .map(|(x, _)| x)
+                .keys()
                 .cloned()
                 .collect::<std::collections::BTreeSet<_>>();