diff --git a/x/erc20/client/cli/tx.go b/x/erc20/client/cli/tx.go
index 0eb785ad..3282109d 100644
--- a/x/erc20/client/cli/tx.go
+++ b/x/erc20/client/cli/tx.go
@@ -303,7 +303,7 @@ func NewToggleTokenConversionProposalCmd(ac addresscodec.Codec) *cobra.Command {
 		Args:    cobra.ExactArgs(1),
 		Short:   "Submit a toggle token conversion proposal",
 		Long:    "Submit a proposal to toggle the conversion of a token pair along with an initial deposit.",
-		Example: fmt.Sprintf("$ %s tx gov submit-proposal toggle-token-conversion <denom_or_contract> --from=<key_or_address>", version.AppName),
+		Example: fmt.Sprintf("$ %s tx gov submit-proposal toggle-token-conversion <denom_or_contract>", version.AppName),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := client.GetClientTxContext(cmd)
 			if err != nil {
diff --git a/x/erc20/keeper/msg_server_test.go b/x/erc20/keeper/msg_server_test.go
index c23982c5..c496480a 100644
--- a/x/erc20/keeper/msg_server_test.go
+++ b/x/erc20/keeper/msg_server_test.go
@@ -1543,9 +1543,35 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 		msg       sdk.Msg
 		malleate  func()
 		checkFunc func(uint64)
+		expectErr bool
 	}{
 		{
-			"ok - proposal MsgRegisterCoin",
+			"fail - MsgRegisterCoin - authority check",
+			&types.MsgRegisterCoin{
+				Authority:   "canto1yrmjye0zyfvr0lthc6fwq7qlwg9e8muftxa630",
+				Title:       "MsgRegisterCoin",
+				Description: "MsgRegisterCoin test",
+				Metadata: banktypes.Metadata{
+					Description: "ATOM IBC voucher (channel 14)",
+					Base:        ibcBase,
+					// NOTE: Denom units MUST be increasing
+					DenomUnits: []*banktypes.DenomUnit{
+						{
+							Denom:    ibcBase,
+							Exponent: 0,
+						},
+					},
+					Name:    "ATOM channel-14",
+					Symbol:  "ibcATOM-14",
+					Display: ibcBase,
+				},
+			},
+			func() {},
+			func(_ uint64) {},
+			true,
+		},
+		{
+			"ok - MsgRegisterCoin",
 			&types.MsgRegisterCoin{
 				Authority:   authtypes.NewModuleAddress(govtypes.ModuleName).String(),
 				Title:       "MsgRegisterCoin",
@@ -1580,9 +1606,22 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 				suite.Require().Equal(suite.app.Erc20Keeper.GetDenomMap(suite.ctx, pair.Denom), id)
 				suite.Require().Equal(suite.app.Erc20Keeper.GetERC20Map(suite.ctx, common.HexToAddress(pair.Erc20Address)), id)
 			},
+			false,
+		},
+		{
+			"fail - MsgRegisterERC20 - authority check",
+			&types.MsgRegisterERC20{
+				Authority:    "canto1yrmjye0zyfvr0lthc6fwq7qlwg9e8muftxa630",
+				Title:        "MsgRegisterERC20",
+				Description:  "MsgRegisterERC20 test",
+				Erc20Address: erc20Address,
+			},
+			func() {},
+			func(_ uint64) {},
+			true,
 		},
 		{
-			"ok - proposal MsgRegisterERC20",
+			"ok - MsgRegisterERC20",
 			&types.MsgRegisterERC20{
 				Authority:    authtypes.NewModuleAddress(govtypes.ModuleName).String(),
 				Title:        "MsgRegisterERC20",
@@ -1601,9 +1640,22 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 				suite.Require().Equal(suite.app.Erc20Keeper.GetDenomMap(suite.ctx, pair.Denom), id)
 				suite.Require().Equal(suite.app.Erc20Keeper.GetERC20Map(suite.ctx, common.HexToAddress(pair.Erc20Address)), id)
 			},
+			false,
 		},
 		{
-			"ok - proposal MsgToggleTokenConversion",
+			"fail - MsgToggleTokenConversion - authority check",
+			&types.MsgToggleTokenConversion{
+				Authority:   "canto1yrmjye0zyfvr0lthc6fwq7qlwg9e8muftxa630",
+				Title:       "MsgToggleTokenConversion",
+				Description: "MsgToggleTokenConversion test",
+				Token:       erc20Address,
+			},
+			func() {},
+			func(_ uint64) {},
+			true,
+		},
+		{
+			"ok - MsgToggleTokenConversion",
 			&types.MsgToggleTokenConversion{
 				Authority:   authtypes.NewModuleAddress(govtypes.ModuleName).String(),
 				Title:       "MsgToggleTokenConversion",
@@ -1621,9 +1673,20 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 				suite.Require().True(ok)
 				suite.Require().Equal(pair.Enabled, false)
 			},
+			false,
+		},
+		{
+			"fail - MsgUpdateParams - authority check",
+			&types.MsgUpdateParams{
+				Authority: "canto1yrmjye0zyfvr0lthc6fwq7qlwg9e8muftxa630",
+				Params:    types.NewParams(false, false),
+			},
+			func() {},
+			func(proposalId uint64) {},
+			true,
 		},
 		{
-			"ok - proposal MsgUpdateParams",
+			"ok - MsgUpdateParams",
 			&types.MsgUpdateParams{
 				Authority: authtypes.NewModuleAddress(govtypes.ModuleName).String(),
 				Params:    types.NewParams(false, false),
@@ -1637,6 +1700,7 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 				suite.Require().Equal(govtypesv1.ProposalStatus_PROPOSAL_STATUS_PASSED, proposal.Status)
 				suite.Require().Equal(suite.app.Erc20Keeper.GetParams(suite.ctx), changeParams)
 			},
+			false,
 		},
 	}
 
@@ -1646,20 +1710,24 @@ func (suite *KeeperTestSuite) TestMsgExecutionByProposal() {
 
 			// submit proposal
 			proposal, err := suite.app.GovKeeper.SubmitProposal(suite.ctx, []sdk.Msg{tc.msg}, "", "test", "description", proposer, false)
-			suite.Require().NoError(err)
-			suite.Commit()
+			if tc.expectErr {
+				suite.Require().Error(err)
+			} else {
+				suite.Require().NoError(err)
+				suite.Commit()
 
-			ok, err := suite.app.GovKeeper.AddDeposit(suite.ctx, proposal.Id, proposer, govParams.MinDeposit)
-			suite.Require().NoError(err)
-			suite.Require().True(ok)
-			suite.Commit()
+				ok, err := suite.app.GovKeeper.AddDeposit(suite.ctx, proposal.Id, proposer, govParams.MinDeposit)
+				suite.Require().NoError(err)
+				suite.Require().True(ok)
+				suite.Commit()
 
-			err = suite.app.GovKeeper.AddVote(suite.ctx, proposal.Id, proposer, govtypesv1.NewNonSplitVoteOption(govtypesv1.OptionYes), "")
-			suite.Require().NoError(err)
-			suite.CommitAfter(*govParams.VotingPeriod)
+				err = suite.app.GovKeeper.AddVote(suite.ctx, proposal.Id, proposer, govtypesv1.NewNonSplitVoteOption(govtypesv1.OptionYes), "")
+				suite.Require().NoError(err)
+				suite.CommitAfter(*govParams.VotingPeriod)
 
-			// check proposal result
-			tc.checkFunc(proposal.Id)
+				// check proposal result
+				tc.checkFunc(proposal.Id)
+			}
 		})
 	}
 }