diff --git a/modules/core/03-connection/types/connection_test.go b/modules/core/03-connection/types/connection_test.go
index ba88f05b8e9..d789662c77a 100644
--- a/modules/core/03-connection/types/connection_test.go
+++ b/modules/core/03-connection/types/connection_test.go
@@ -5,9 +5,11 @@ import (
 
 	"github.com/stretchr/testify/require"
 
+	host "github.com/cosmos/ibc-go/v9/modules/core/24-host"
 	clienttypes "github.com/cosmos/ibc-go/v9/modules/core/02-client/types"
 	"github.com/cosmos/ibc-go/v9/modules/core/03-connection/types"
 	commitmenttypes "github.com/cosmos/ibc-go/v9/modules/core/23-commitment/types"
+	ibcerrors "github.com/cosmos/ibc-go/v9/modules/core/errors"
 	ibctesting "github.com/cosmos/ibc-go/v9/testing"
 )
 
@@ -24,32 +26,32 @@ func TestConnectionValidateBasic(t *testing.T) {
 	testCases := []struct {
 		name       string
 		connection types.ConnectionEnd
-		expPass    bool
+		expError   error
 	}{
 		{
 			"valid connection",
 			types.ConnectionEnd{clientID, []*types.Version{ibctesting.ConnectionVersion}, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500},
-			true,
+			nil,
 		},
 		{
 			"invalid client id",
 			types.ConnectionEnd{"(clientID1)", []*types.Version{ibctesting.ConnectionVersion}, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500},
-			false,
+			host.ErrInvalidID,
 		},
 		{
 			"empty versions",
 			types.ConnectionEnd{clientID, nil, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500},
-			false,
+			ibcerrors.ErrInvalidVersion,
 		},
 		{
 			"invalid version",
 			types.ConnectionEnd{clientID, []*types.Version{{}}, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500},
-			false,
+			types.ErrInvalidVersion,
 		},
 		{
 			"invalid counterparty",
 			types.ConnectionEnd{clientID, []*types.Version{ibctesting.ConnectionVersion}, types.INIT, types.Counterparty{clientID2, connectionID2, emptyPrefix}, 500},
-			false,
+			types.ErrInvalidCounterparty,
 		},
 	}
 
@@ -57,10 +59,10 @@ func TestConnectionValidateBasic(t *testing.T) {
 		tc := tc
 
 		err := tc.connection.ValidateBasic()
-		if tc.expPass {
+		if tc.expError == nil {
 			require.NoError(t, err, "valid test case %d failed: %s", i, tc.name)
 		} else {
-			require.Error(t, err, "invalid test case %d passed: %s", i, tc.name)
+			require.ErrorIs(t, err, tc.expError)
 		}
 	}
 }
@@ -69,22 +71,22 @@ func TestCounterpartyValidateBasic(t *testing.T) {
 	testCases := []struct {
 		name         string
 		counterparty types.Counterparty
-		expPass      bool
+		expError     error
 	}{
-		{"valid counterparty", types.Counterparty{clientID, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, true},
-		{"invalid client id", types.Counterparty{"(InvalidClient)", connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, false},
-		{"invalid connection id", types.Counterparty{clientID, "(InvalidConnection)", commitmenttypes.NewMerklePrefix([]byte("prefix"))}, false},
-		{"invalid prefix", types.Counterparty{clientID, connectionID2, emptyPrefix}, false},
+		{"valid counterparty", types.Counterparty{clientID, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, nil},
+		{"invalid client id", types.Counterparty{"(InvalidClient)", connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, host.ErrInvalidID},
+		{"invalid connection id", types.Counterparty{clientID, "(InvalidConnection)", commitmenttypes.NewMerklePrefix([]byte("prefix"))}, host.ErrInvalidID},
+		{"invalid prefix", types.Counterparty{clientID, connectionID2, emptyPrefix}, types.ErrInvalidCounterparty},
 	}
 
 	for i, tc := range testCases {
 		tc := tc
 
 		err := tc.counterparty.ValidateBasic()
-		if tc.expPass {
+		if tc.expError == nil {
 			require.NoError(t, err, "valid test case %d failed: %s", i, tc.name)
 		} else {
-			require.Error(t, err, "invalid test case %d passed: %s", i, tc.name)
+			require.ErrorIs(t, err, tc.expError)
 		}
 	}
 }
@@ -93,17 +95,17 @@ func TestIdentifiedConnectionValidateBasic(t *testing.T) {
 	testCases := []struct {
 		name       string
 		connection types.IdentifiedConnection
-		expPass    bool
+		expError   error
 	}{
 		{
 			"valid connection",
 			types.NewIdentifiedConnection(clientID, types.ConnectionEnd{clientID, []*types.Version{ibctesting.ConnectionVersion}, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500}),
-			true,
+			nil,
 		},
 		{
 			"invalid connection id",
 			types.NewIdentifiedConnection("(connectionIDONE)", types.ConnectionEnd{clientID, []*types.Version{ibctesting.ConnectionVersion}, types.INIT, types.Counterparty{clientID2, connectionID2, commitmenttypes.NewMerklePrefix([]byte("prefix"))}, 500}),
-			false,
+			host.ErrInvalidID,
 		},
 	}
 
@@ -111,10 +113,10 @@ func TestIdentifiedConnectionValidateBasic(t *testing.T) {
 		tc := tc
 
 		err := tc.connection.ValidateBasic()
-		if tc.expPass {
+		if tc.expError == nil {
 			require.NoError(t, err, "valid test case %d failed: %s", i, tc.name)
 		} else {
-			require.Error(t, err, "invalid test case %d passed: %s", i, tc.name)
+			require.ErrorIs(t, err, tc.expError)
 		}
 	}
-}
+}
\ No newline at end of file
diff --git a/modules/core/03-connection/types/genesis_test.go b/modules/core/03-connection/types/genesis_test.go
index 39a930c1433..96c43cebaf3 100644
--- a/modules/core/03-connection/types/genesis_test.go
+++ b/modules/core/03-connection/types/genesis_test.go
@@ -1,11 +1,13 @@
 package types_test
 
 import (
+	"errors"
 	"testing"
 
 	"github.com/stretchr/testify/require"
 
 	"github.com/cosmos/ibc-go/v9/modules/core/03-connection/types"
+	host "github.com/cosmos/ibc-go/v9/modules/core/24-host"
 	commitmenttypes "github.com/cosmos/ibc-go/v9/modules/core/23-commitment/types"
 	"github.com/cosmos/ibc-go/v9/modules/core/exported"
 	ibctesting "github.com/cosmos/ibc-go/v9/testing"
@@ -15,12 +17,12 @@ func TestValidateGenesis(t *testing.T) {
 	testCases := []struct {
 		name     string
 		genState types.GenesisState
-		expPass  bool
+		expError error
 	}{
 		{
 			name:     "default",
 			genState: types.DefaultGenesisState(),
-			expPass:  true,
+			expError:  nil,
 		},
 		{
 			name: "valid genesis",
@@ -34,7 +36,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: true,
+			expError: nil,
 		},
 		{
 			name: "invalid connection",
@@ -48,7 +50,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: false,
+			expError: host.ErrInvalidID,
 		},
 		{
 			name: "invalid client id",
@@ -62,7 +64,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: false,
+			expError: host.ErrInvalidID,
 		},
 		{
 			name: "invalid path",
@@ -76,7 +78,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: false,
+			expError: host.ErrInvalidID,
 		},
 		{
 			name: "invalid connection identifier",
@@ -90,7 +92,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: false,
+			expError: host.ErrInvalidID,
 		},
 		{
 			name: "localhost connection identifier",
@@ -104,7 +106,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: true,
+			expError: nil,
 		},
 		{
 			name: "next connection sequence is not greater than maximum connection identifier sequence provided",
@@ -118,7 +120,7 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.DefaultParams(),
 			),
-			expPass: false,
+			expError: errors.New("next connection sequence 0 must be greater than maximum sequence used in connection identifier 10"),
 		},
 		{
 			name: "invalid params",
@@ -132,17 +134,17 @@ func TestValidateGenesis(t *testing.T) {
 				0,
 				types.Params{},
 			),
-			expPass: false,
+			expError: errors.New("MaxExpectedTimePerBlock cannot be zero"),
 		},
 	}
 
 	for _, tc := range testCases {
 		tc := tc
 		err := tc.genState.Validate()
-		if tc.expPass {
+		if tc.expError == nil {
 			require.NoError(t, err, tc.name)
 		} else {
-			require.Error(t, err, tc.name)
+			require.ErrorContains(t, err, tc.expError.Error())
 		}
 	}
-}
+}
\ No newline at end of file