diff --git a/x/foundation/keeper/exported.go b/x/foundation/keeper/exported.go
index 3374b0afac..ff3f3bc33c 100644
--- a/x/foundation/keeper/exported.go
+++ b/x/foundation/keeper/exported.go
@@ -8,6 +8,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
 	paramstypes "github.com/cosmos/cosmos-sdk/x/params/types"
+	stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
 
 	"github.com/Finschia/finschia-sdk/x/foundation"
 	"github.com/Finschia/finschia-sdk/x/foundation/keeper/internal"
@@ -60,7 +61,7 @@ func (k Keeper) ExportGenesis(ctx sdk.Context) *foundation.GenesisState {
 	return k.impl.ExportGenesis(ctx)
 }
 
-func (k Keeper) Hooks() internal.Hooks {
+func (k Keeper) Hooks() stakingtypes.StakingHooks {
 	return k.impl.Hooks()
 }
 
diff --git a/x/foundation/keeper/internal/hooks.go b/x/foundation/keeper/internal/hooks.go
index 01f3cee616..8885b8e520 100644
--- a/x/foundation/keeper/internal/hooks.go
+++ b/x/foundation/keeper/internal/hooks.go
@@ -19,19 +19,19 @@ type Hooks struct {
 // Create new foundation hooks
 func (k Keeper) Hooks() Hooks { return Hooks{k} }
 
-func (h Hooks) AfterDelegationModified(ctx context.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) AfterDelegationModified(_ context.Context, _ sdk.AccAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) AfterUnbondingInitiated(ctx context.Context, id uint64) error {
+func (h Hooks) AfterUnbondingInitiated(_ context.Context, _ uint64) error {
 	return nil
 }
 
-func (h Hooks) AfterValidatorBeginUnbonding(ctx context.Context, consAddr sdk.ConsAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) AfterValidatorBeginUnbonding(_ context.Context, _ sdk.ConsAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) AfterValidatorBonded(ctx context.Context, consAddr sdk.ConsAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) AfterValidatorBonded(_ context.Context, _ sdk.ConsAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
@@ -51,26 +51,26 @@ func (h Hooks) AfterValidatorCreated(goCtx context.Context, valAddr sdk.ValAddre
 	return nil
 }
 
-func (h Hooks) AfterValidatorRemoved(ctx context.Context, consAddr sdk.ConsAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) AfterValidatorRemoved(_ context.Context, _ sdk.ConsAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) BeforeDelegationCreated(ctx context.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) BeforeDelegationCreated(_ context.Context, _ sdk.AccAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) BeforeDelegationRemoved(ctx context.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) BeforeDelegationRemoved(_ context.Context, _ sdk.AccAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) BeforeDelegationSharesModified(ctx context.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress) error {
+func (h Hooks) BeforeDelegationSharesModified(_ context.Context, _ sdk.AccAddress, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) BeforeValidatorModified(ctx context.Context, valAddr sdk.ValAddress) error {
+func (h Hooks) BeforeValidatorModified(_ context.Context, _ sdk.ValAddress) error {
 	return nil
 }
 
-func (h Hooks) BeforeValidatorSlashed(ctx context.Context, valAddr sdk.ValAddress, fraction math.LegacyDec) error {
+func (h Hooks) BeforeValidatorSlashed(_ context.Context, _ sdk.ValAddress, _ math.LegacyDec) error {
 	return nil
 }