diff --git a/tests/go.mod b/tests/go.mod
index 78f711884c42..d9c660a2b8f4 100644
--- a/tests/go.mod
+++ b/tests/go.mod
@@ -214,4 +214,5 @@ replace (
 	// Fix upstream GHSA-h395-qcrw-5vmq and GHSA-3vp4-m3rf-835h vulnerabilities.
 	// TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.1
+	cosmossdk.io/x/tx => ../x/tx
 )
diff --git a/tests/integration/tx/aminojson/aminojson_test.go b/tests/integration/tx/aminojson/aminojson_test.go
index eb271308f8d6..6d9859db7ac3 100644
--- a/tests/integration/tx/aminojson/aminojson_test.go
+++ b/tests/integration/tx/aminojson/aminojson_test.go
@@ -131,8 +131,12 @@ func TestAminoJSON_Equivalence(t *testing.T) {
 
 				legacyAminoJSON, err := encCfg.Amino.MarshalJSON(gogo)
 				require.NoError(t, err)
+				legacyAminoJSON, err = types.SortJSON(legacyAminoJSON)
+				require.NoError(t, err)
 				aminoJSON, err := aj.Marshal(msg)
 				require.NoError(t, err)
+				aminoJSON, err = types.SortJSON(aminoJSON)
+				require.NoError(t, err)
 				require.Equal(t, string(legacyAminoJSON), string(aminoJSON))
 
 				// test amino json signer handler equivalence
@@ -224,7 +228,15 @@ func TestAminoJSON_LegacyParity(t *testing.T) {
 		protoUnmarshalFails bool
 	}{
 		"auth/params": {gogo: &authtypes.Params{TxSigLimit: 10}, pulsar: &authapi.Params{TxSigLimit: 10}},
-		"auth/module_account": {
+		"auth/module_account_nil_permissions": {
+			gogo: &authtypes.ModuleAccount{
+				BaseAccount: authtypes.NewBaseAccountWithAddress(addr1),
+			},
+			pulsar: &authapi.ModuleAccount{
+				BaseAccount: &authapi.BaseAccount{Address: addr1.String()},
+			},
+		},
+		"auth/module_account_empty_permissions": {
 			gogo: &authtypes.ModuleAccount{
 				BaseAccount: authtypes.NewBaseAccountWithAddress(addr1), Permissions: []string{},
 			},
@@ -407,16 +419,22 @@ func TestAminoJSON_LegacyParity(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			gogoBytes, err := encCfg.Amino.MarshalJSON(tc.gogo)
 			require.NoError(t, err)
-
+			gogoBytes, err = types.SortJSON(gogoBytes)
+			require.NoError(t, err)
 			pulsarBytes, err := aj.Marshal(tc.pulsar)
 			if tc.pulsarMarshalFails {
 				require.Error(t, err)
 				return
 			}
 			require.NoError(t, err)
-
+			pulsarBytes, err = types.SortJSON(pulsarBytes)
+			require.NoError(t, err)
 			fmt.Printf("pulsar: %s\n", string(pulsarBytes))
 			fmt.Printf("  gogo: %s\n", string(gogoBytes))
+			if tc.roundTripUnequal {
+				require.NotEqual(t, string(gogoBytes), string(pulsarBytes))
+				return
+			}
 			require.Equal(t, string(gogoBytes), string(pulsarBytes))
 
 			pulsarProtoBytes, err := proto.Marshal(tc.pulsar)
@@ -434,10 +452,8 @@ func TestAminoJSON_LegacyParity(t *testing.T) {
 
 			newGogoBytes, err := encCfg.Amino.MarshalJSON(newGogo)
 			require.NoError(t, err)
-			if tc.roundTripUnequal {
-				require.NotEqual(t, string(gogoBytes), string(newGogoBytes))
-				return
-			}
+			newGogoBytes, err = types.SortJSON(newGogoBytes)
+			require.NoError(t, err)
 			require.Equal(t, string(gogoBytes), string(newGogoBytes))
 
 			// test amino json signer handler equivalence
diff --git a/x/tx/signing/aminojson/encoder.go b/x/tx/signing/aminojson/encoder.go
index e954c2651e30..c4bf10d04dbe 100644
--- a/x/tx/signing/aminojson/encoder.go
+++ b/x/tx/signing/aminojson/encoder.go
@@ -51,12 +51,7 @@ func cosmosDecEncoder(_ *Encoder, v protoreflect.Value, w io.Writer) error {
 		if val == "" {
 			return jsonMarshal(w, "0")
 		}
-		var dec math.LegacyDec
-		err := dec.Unmarshal([]byte(val))
-		if err != nil {
-			return err
-		}
-		return jsonMarshal(w, dec.String())
+		return jsonMarshal(w, val)
 	case []byte:
 		if len(val) == 0 {
 			return jsonMarshal(w, "0")