diff --git a/CHANGELOG.md b/CHANGELOG.md
index c23bcd36a8..423646296b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -108,6 +108,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/auth) [#19239](https://github.com/cosmos/cosmos-sdk/pull/19239) Sets from flag in multi-sign command to avoid no key name provided error.
 * (x/auth) [#23741](https://github.com/cosmos/cosmos-sdk/pull/23741) Support legacy global AccountNumber for legacy compatibility.
 * (baseapp) [#24526](https://github.com/cosmos/cosmos-sdk/pull/24526) Fix incorrect retention height when `commitHeight` equals `minRetainBlocks`.
+* (x/protocolpool) [#24594](https://github.com/cosmos/cosmos-sdk/pull/24594) Fix NPE when initializing module via depinject.
 
 ## [v0.50.12](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.12) - 2025-02-20
 
diff --git a/simapp/app.go b/simapp/app.go
index 0bebafc655..620e73b9fc 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -469,7 +469,7 @@ func NewSimApp(
 
 	app.GovKeeper = *govKeeper.SetHooks(
 		govtypes.NewMultiGovHooks(
-		// register the governance hooks
+			// register the governance hooks
 		),
 	)
 
@@ -499,7 +499,7 @@ func NewSimApp(
 
 	app.EpochsKeeper.SetHooks(
 		epochstypes.NewMultiEpochHooks(
-		// insert epoch hooks receivers here
+			// insert epoch hooks receivers here
 		),
 	)
 
@@ -528,8 +528,8 @@ func NewSimApp(
 		nftmodule.NewAppModule(appCodec, app.NFTKeeper, app.AccountKeeper, app.BankKeeper, app.interfaceRegistry),
 		consensus.NewAppModule(appCodec, app.ConsensusParamsKeeper),
 		circuit.NewAppModule(appCodec, app.CircuitKeeper),
-		epochs.NewAppModule(appCodec, app.EpochsKeeper),
-		protocolpool.NewAppModule(appCodec, app.ProtocolPoolKeeper, app.AccountKeeper, app.BankKeeper),
+		epochs.NewAppModule(app.EpochsKeeper),
+		protocolpool.NewAppModule(app.ProtocolPoolKeeper, app.AccountKeeper, app.BankKeeper),
 	)
 
 	// BasicModuleManager defines the module BasicManager is in charge of setting up basic,
diff --git a/x/epochs/depinject.go b/x/epochs/depinject.go
index f9cd652943..d50401850d 100644
--- a/x/epochs/depinject.go
+++ b/x/epochs/depinject.go
@@ -45,7 +45,7 @@ type ModuleOutputs struct {
 
 func ProvideModule(in ModuleInputs) ModuleOutputs {
 	k := keeper.NewKeeper(in.StoreService, in.Cdc)
-	m := NewAppModule(in.Cdc, k)
+	m := NewAppModule(k)
 	return ModuleOutputs{EpochKeeper: k, Module: m}
 }
 
diff --git a/x/epochs/module.go b/x/epochs/module.go
index d2d9e40981..a0c9000947 100644
--- a/x/epochs/module.go
+++ b/x/epochs/module.go
@@ -33,14 +33,12 @@ const ConsensusVersion = 1
 
 // AppModule implements the AppModule interface for the epochs module.
 type AppModule struct {
-	cdc    codec.Codec
 	keeper keeper.Keeper
 }
 
 // NewAppModule creates a new AppModule object.
-func NewAppModule(cdc codec.Codec, keeper keeper.Keeper) AppModule {
+func NewAppModule(keeper keeper.Keeper) AppModule {
 	return AppModule{
-		cdc:    cdc,
 		keeper: keeper,
 	}
 }
@@ -73,8 +71,8 @@ func (am AppModule) RegisterServices(registrar grpc.ServiceRegistrar) error {
 }
 
 // DefaultGenesis returns the epochs module's default genesis state.
-func (am AppModule) DefaultGenesis(_ codec.JSONCodec) json.RawMessage {
-	data, err := am.cdc.MarshalJSON(types.DefaultGenesis())
+func (am AppModule) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
+	data, err := cdc.MarshalJSON(types.DefaultGenesis())
 	if err != nil {
 		panic(err)
 	}
@@ -82,9 +80,9 @@ func (am AppModule) DefaultGenesis(_ codec.JSONCodec) json.RawMessage {
 }
 
 // ValidateGenesis performs genesis state validation for the epochs module.
-func (am AppModule) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error {
+func (am AppModule) ValidateGenesis(cdc codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error {
 	var gs types.GenesisState
-	if err := am.cdc.UnmarshalJSON(bz, &gs); err != nil {
+	if err := cdc.UnmarshalJSON(bz, &gs); err != nil {
 		return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
 	}
 
@@ -92,9 +90,9 @@ func (am AppModule) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConfig
 }
 
 // InitGenesis performs the epochs module's genesis initialization
-func (am AppModule) InitGenesis(ctx sdk.Context, _ codec.JSONCodec, bz json.RawMessage) {
+func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, bz json.RawMessage) {
 	var gs types.GenesisState
-	err := am.cdc.UnmarshalJSON(bz, &gs)
+	err := cdc.UnmarshalJSON(bz, &gs)
 	if err != nil {
 		panic(fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err))
 	}
@@ -105,13 +103,13 @@ func (am AppModule) InitGenesis(ctx sdk.Context, _ codec.JSONCodec, bz json.RawM
 }
 
 // ExportGenesis returns the epochs module's exported genesis state as raw JSON bytes.
-func (am AppModule) ExportGenesis(ctx sdk.Context, _ codec.JSONCodec) json.RawMessage {
+func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
 	gs, err := am.keeper.ExportGenesis(ctx)
 	if err != nil {
 		panic(err)
 	}
 
-	bz, err := am.cdc.MarshalJSON(gs)
+	bz, err := cdc.MarshalJSON(gs)
 	if err != nil {
 		panic(err)
 	}
diff --git a/x/protocolpool/depinject.go b/x/protocolpool/depinject.go
index 4a549c3e6a..e2261c7c0b 100644
--- a/x/protocolpool/depinject.go
+++ b/x/protocolpool/depinject.go
@@ -57,7 +57,7 @@ func ProvideModule(in ModuleInputs) ModuleOutputs {
 	}
 
 	k := keeper.NewKeeper(in.Codec, in.StoreService, in.AccountKeeper, in.BankKeeper, authorityAddr)
-	m := NewAppModule(in.Codec, k, in.AccountKeeper, in.BankKeeper)
+	m := NewAppModule(k, in.AccountKeeper, in.BankKeeper)
 
 	return ModuleOutputs{
 		Keeper: k,
diff --git a/x/protocolpool/module.go b/x/protocolpool/module.go
index b0ded74e64..ae08368f67 100644
--- a/x/protocolpool/module.go
+++ b/x/protocolpool/module.go
@@ -36,18 +36,16 @@ var (
 
 // AppModule implements an application module for the pool module
 type AppModule struct {
-	cdc           codec.Codec
 	keeper        keeper.Keeper
 	accountKeeper types.AccountKeeper
 	bankKeeper    types.BankKeeper
 }
 
 // NewAppModule creates a new AppModule object
-func NewAppModule(cdc codec.Codec, keeper keeper.Keeper,
+func NewAppModule(keeper keeper.Keeper,
 	accountKeeper types.AccountKeeper, bankKeeper types.BankKeeper,
 ) AppModule {
 	return AppModule{
-		cdc:           cdc,
 		keeper:        keeper,
 		accountKeeper: accountKeeper,
 		bankKeeper:    bankKeeper,
@@ -84,8 +82,8 @@ func (am AppModule) RegisterServices(configurator module.Configurator) {
 }
 
 // DefaultGenesis returns default genesis state as raw bytes for the protocolpool module.
-func (am AppModule) DefaultGenesis(_ codec.JSONCodec) json.RawMessage {
-	data, err := am.cdc.MarshalJSON(types.DefaultGenesisState())
+func (am AppModule) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
+	data, err := cdc.MarshalJSON(types.DefaultGenesisState())
 	if err != nil {
 		panic(err)
 	}
@@ -93,9 +91,9 @@ func (am AppModule) DefaultGenesis(_ codec.JSONCodec) json.RawMessage {
 }
 
 // ValidateGenesis performs genesis state validation for the protocolpool module.
-func (am AppModule) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error {
+func (am AppModule) ValidateGenesis(cdc codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error {
 	var data types.GenesisState
-	if err := am.cdc.UnmarshalJSON(bz, &data); err != nil {
+	if err := cdc.UnmarshalJSON(bz, &data); err != nil {
 		return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
 	}
 
@@ -103,9 +101,9 @@ func (am AppModule) ValidateGenesis(_ codec.JSONCodec, _ client.TxEncodingConfig
 }
 
 // InitGenesis performs genesis initialization for the protocolpool module.
-func (am AppModule) InitGenesis(ctx sdk.Context, _ codec.JSONCodec, data json.RawMessage) {
+func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) {
 	var genesisState types.GenesisState
-	am.cdc.MustUnmarshalJSON(data, &genesisState)
+	cdc.MustUnmarshalJSON(data, &genesisState)
 
 	if err := am.keeper.InitGenesis(ctx, &genesisState); err != nil {
 		panic(fmt.Errorf("failed to init genesis state: %w", err))
@@ -113,12 +111,12 @@ func (am AppModule) InitGenesis(ctx sdk.Context, _ codec.JSONCodec, data json.Ra
 }
 
 // ExportGenesis returns the exported genesis state as raw bytes for the protocolpool module.
-func (am AppModule) ExportGenesis(ctx sdk.Context, _ codec.JSONCodec) json.RawMessage {
+func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
 	gs, err := am.keeper.ExportGenesis(ctx)
 	if err != nil {
 		panic(fmt.Errorf("failed to export genesis state: %w", err))
 	}
-	return am.cdc.MustMarshalJSON(gs)
+	return cdc.MustMarshalJSON(gs)
 }
 
 // BeginBlock implements appmodule.HasBeginBlocker.