diff --git a/pallets/duniter-account/src/lib.rs b/pallets/duniter-account/src/lib.rs
index cf38dba4ec5e215943bd0419149bf7e3cd2cbd5e..d7c5127bc1b23d97abc9c1385837589e37259372 100644
--- a/pallets/duniter-account/src/lib.rs
+++ b/pallets/duniter-account/src/lib.rs
@@ -484,7 +484,7 @@ where
 
 // implement identity event handler
 impl<T: Config> pallet_identity::traits::OnIdtyChange<T> for Pallet<T> {
-    fn on_idty_change(idty_id: IdtyIdOf<T>, idty_event: &IdtyEvent<T>) -> Weight {
+    fn on_idty_change(idty_id: IdtyIdOf<T>, idty_event: &IdtyEvent<T>) {
         match idty_event {
             // link account to newly created identity
             IdtyEvent::Created { owner_key, .. } => {
@@ -495,8 +495,5 @@ impl<T: Config> pallet_identity::traits::OnIdtyChange<T> for Pallet<T> {
             | IdtyEvent::ChangedOwnerKey { .. }
             | IdtyEvent::Removed { .. } => {}
         }
-        // The weight accounting is performed where the handler is called.
-        // See in pallet-identity.
-        Weight::zero()
     }
 }
diff --git a/pallets/duniter-wot/src/lib.rs b/pallets/duniter-wot/src/lib.rs
index 38951486baff47d6705e302bd70988b8691a286c..ed1c4fcff06d48093295c82b0a1e148e3dd1248a 100644
--- a/pallets/duniter-wot/src/lib.rs
+++ b/pallets/duniter-wot/src/lib.rs
@@ -363,7 +363,7 @@ where
 
 // implement identity event handler
 impl<T: Config<I>, I: 'static> pallet_identity::traits::OnIdtyChange<T> for Pallet<T, I> {
-    fn on_idty_change(idty_index: IdtyIndex, idty_event: &IdtyEvent<T>) -> Weight {
+    fn on_idty_change(idty_index: IdtyIndex, idty_event: &IdtyEvent<T>) {
         match idty_event {
             IdtyEvent::Created { creator, .. } => {
                 if let Err(e) = <pallet_certification::Pallet<T, I>>::do_add_cert_checked(
@@ -394,7 +394,6 @@ impl<T: Config<I>, I: 'static> pallet_identity::traits::OnIdtyChange<T> for Pall
             }
             IdtyEvent::Confirmed | IdtyEvent::ChangedOwnerKey { .. } => {}
         }
-        Weight::zero()
     }
 }
 
diff --git a/pallets/identity/src/traits.rs b/pallets/identity/src/traits.rs
index 86acc604be0fc9e5c2d78a9fff4baffde8d6c079..536208cd062539f7d89fad8294f69ff07c9eddf7 100644
--- a/pallets/identity/src/traits.rs
+++ b/pallets/identity/src/traits.rs
@@ -55,16 +55,14 @@ pub trait IdtyNameValidator {
 }
 
 pub trait OnIdtyChange<T: Config> {
-    fn on_idty_change(idty_index: T::IdtyIndex, idty_event: &IdtyEvent<T>) -> Weight;
+    fn on_idty_change(idty_index: T::IdtyIndex, idty_event: &IdtyEvent<T>);
 }
 
 #[impl_for_tuples(5)]
 #[allow(clippy::let_and_return)]
 impl<T: Config> OnIdtyChange<T> for Tuple {
-    fn on_idty_change(idty_index: T::IdtyIndex, idty_event: &IdtyEvent<T>) -> Weight {
-        let mut weight = Weight::zero();
-        for_tuples!( #( weight = weight.saturating_add(Tuple::on_idty_change(idty_index, idty_event)); )* );
-        weight
+    fn on_idty_change(idty_index: T::IdtyIndex, idty_event: &IdtyEvent<T>) {
+        for_tuples!( #( Tuple::on_idty_change(idty_index, idty_event); )* );
     }
 }
 
diff --git a/pallets/quota/src/lib.rs b/pallets/quota/src/lib.rs
index 91df0459e3440a6f4bbcfcb595fb3c6377d9c5aa..a2f21df2133475939faec63dde68eb0edb286996 100644
--- a/pallets/quota/src/lib.rs
+++ b/pallets/quota/src/lib.rs
@@ -348,7 +348,7 @@ fn is_eligible_for_refund<T: pallet_identity::Config>(_identity: IdtyId<T>) -> b
 
 // implement identity event handler
 impl<T: Config> pallet_identity::traits::OnIdtyChange<T> for Pallet<T> {
-    fn on_idty_change(idty_id: IdtyId<T>, idty_event: &IdtyEvent<T>) -> Weight {
+    fn on_idty_change(idty_id: IdtyId<T>, idty_event: &IdtyEvent<T>) {
         match idty_event {
             // initialize quota on identity creation
             IdtyEvent::Created { .. } => {
@@ -365,7 +365,5 @@ impl<T: Config> pallet_identity::traits::OnIdtyChange<T> for Pallet<T> {
             }
             IdtyEvent::Confirmed | IdtyEvent::Validated | IdtyEvent::ChangedOwnerKey { .. } => {}
         }
-        // TODO proper weight
-        Weight::zero()
     }
 }
diff --git a/runtime/common/src/handlers.rs b/runtime/common/src/handlers.rs
index 540054ab341379c3410bf2a030835a6290a803df..d59ff5da5e929c19f79493a870141aeadcc5a040 100644
--- a/runtime/common/src/handlers.rs
+++ b/runtime/common/src/handlers.rs
@@ -45,7 +45,7 @@ where
     T: pallet_identity::Config<IdtyIndex = IdtyIndex, IdtyData = IdtyData>,
     T: pallet_universal_dividend::Config,
 {
-    fn on_idty_change(idty_index: IdtyIndex, idty_event: &IdtyEvent<T>) -> Weight {
+    fn on_idty_change(idty_index: IdtyIndex, idty_event: &IdtyEvent<T>) {
         match idty_event {
             IdtyEvent::Validated => {
                 // when identity is validated, it starts getting right to UD
@@ -64,7 +64,6 @@ where
             }
             IdtyEvent::Created { .. } | IdtyEvent::Confirmed | IdtyEvent::Removed { .. } => {}
         }
-        Weight::zero()
     }
 }