diff --git a/x/authz/msgs_test.go b/x/authz/msgs_test.go
index bd0a230be281..194f93d417f3 100644
--- a/x/authz/msgs_test.go
+++ b/x/authz/msgs_test.go
@@ -72,7 +72,7 @@ func TestAminoJSON(t *testing.T) {
 	sendAuthz := banktypes.NewSendAuthorization(sdk.NewCoins(sdk.NewCoin("stake", sdkmath.NewInt(1000))), nil)
 	sendGrant, err := authz.NewGrant(blockTime, sendAuthz, &expiresAt)
 	require.NoError(t, err)
-	valAddr, err := sdk.ValAddressFromBech32("cosmosvaloper1xcy3els9ua75kdm783c3qu0rfa2eples6eavqq")
+	valAddr, err := valAddressCodec.StringToBytes("cosmosvaloper1xcy3els9ua75kdm783c3qu0rfa2eples6eavqq")
 	require.NoError(t, err)
 	stakingAuth, err := stakingtypes.NewStakeAuthorization([]sdk.ValAddress{valAddr}, nil, stakingtypes.AuthorizationType_AUTHORIZATION_TYPE_DELEGATE, &sdk.Coin{Denom: "stake", Amount: sdkmath.NewInt(1000)}, valAddressCodec)
 	require.NoError(t, err)