diff --git a/core/app/codec.go b/core/app/codec.go
index 41d415d676a0..6b24b7ccb499 100644
--- a/core/app/codec.go
+++ b/core/app/codec.go
@@ -1,15 +1,15 @@
 package app
 
 import (
-	gogoproto "cosmossdk.io/core/transaction"
+	"cosmossdk.io/core/transaction"
 )
 
 // MsgInterfaceProtoName defines the protobuf name of the cosmos Msg interface
 const MsgInterfaceProtoName = "cosmos.base.v1beta1.Msg"
 
 type ProtoCodec interface {
-	Marshal(v gogoproto.Msg) ([]byte, error)
-	Unmarshal(data []byte, v gogoproto.Msg) error
+	Marshal(v transaction.Msg) ([]byte, error)
+	Unmarshal(data []byte, v transaction.Msg) error
 	Name() string
 }
 
@@ -20,5 +20,5 @@ type InterfaceRegistry interface {
 }
 
 type AnyResolver = interface {
-	Resolve(typeUrl string) (gogoproto.Msg, error)
+	Resolve(typeUrl string) (transaction.Msg, error)
 }
diff --git a/core/event/service.go b/core/event/service.go
index 5b1f685bbace..9011bcc1ff67 100644
--- a/core/event/service.go
+++ b/core/event/service.go
@@ -4,7 +4,7 @@ package event
 import (
 	"context"
 
-	gogoproto "cosmossdk.io/core/transaction"
+	"cosmossdk.io/core/transaction"
 )
 
 // Service represents an event service which can retrieve and set an event manager in a context.
@@ -19,7 +19,7 @@ type Manager interface {
 	// Emit emits events represented as a protobuf message (as described in ADR 032).
 	//
 	// Callers SHOULD assume that these events will not be included in consensus.
-	Emit(event gogoproto.Msg) error
+	Emit(event transaction.Msg) error
 
 	// EmitKV emits an event based on an event and kv-pair attributes.
 	//
diff --git a/core/registry/legacy.go b/core/registry/legacy.go
index 8364bc8bde35..c0f45883ef92 100644
--- a/core/registry/legacy.go
+++ b/core/registry/legacy.go
@@ -1,7 +1,7 @@
 package registry
 
 import (
-	gogoproto "cosmossdk.io/core/transaction"
+	"cosmossdk.io/core/transaction"
 )
 
 type InterfaceRegistrar interface {
@@ -14,12 +14,12 @@ type InterfaceRegistrar interface {
 	//
 	// Ex:
 	//   registry.RegisterInterface("cosmos.base.v1beta1.Msg", (*sdk.Msg)(nil))
-	RegisterInterface(protoName string, iface interface{}, impls ...gogoproto.Msg)
+	RegisterInterface(protoName string, iface interface{}, impls ...transaction.Msg)
 
 	// RegisterImplementations registers impls as concrete implementations of
 	// the interface iface.
 	//
 	// Ex:
 	//  registry.RegisterImplementations((*sdk.Msg)(nil), &MsgSend{}, &MsgMultiSend{})
-	RegisterImplementations(iface interface{}, impls ...gogoproto.Msg)
+	RegisterImplementations(iface interface{}, impls ...transaction.Msg)
 }
diff --git a/core/router/service.go b/core/router/service.go
index 765e41489016..50b1865e6800 100644
--- a/core/router/service.go
+++ b/core/router/service.go
@@ -3,7 +3,7 @@ package router
 import (
 	"context"
 
-	gogoproto "cosmossdk.io/core/transaction"
+	"cosmossdk.io/core/transaction"
 )
 
 // Service is the interface that wraps the basic methods for a router.
@@ -12,7 +12,7 @@ type Service interface {
 	// CanInvoke returns an error if the given request cannot be invoked.
 	CanInvoke(ctx context.Context, typeURL string) error
 	// InvokeTyped execute a message or query. It should be used when the called knows the type of the response.
-	InvokeTyped(ctx context.Context, req, res gogoproto.Msg) error
+	InvokeTyped(ctx context.Context, req, res transaction.Msg) error
 	// InvokeUntyped execute a Msg or query. It should be used when the called doesn't know the type of the response.
-	InvokeUntyped(ctx context.Context, req gogoproto.Msg) (res gogoproto.Msg, err error)
+	InvokeUntyped(ctx context.Context, req transaction.Msg) (res transaction.Msg, err error)
 }