diff --git a/src/client/lcd/api/TxAPI.spec.ts b/src/client/lcd/api/TxAPI.spec.ts
index d6942d9c6..6447843ed 100644
--- a/src/client/lcd/api/TxAPI.spec.ts
+++ b/src/client/lcd/api/TxAPI.spec.ts
@@ -15,10 +15,28 @@ const terra = new LCDClient({
   URL: 'https://pisco-lcd.terra.dev',
 });
 
+const terraClassic = new LCDClient({
+  chainID: 'columbus-5',
+  URL: 'https://lcd.terra.dev',
+});
+
 const txAPI = new TxAPI(terra);
 const wallet = terra.wallet(mk);
 
 describe('TxAPI', () => {
+  describe('decode', () => {
+    it('classic', async () => {
+      terraClassic.tx.decode(
+        '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'
+      );
+    });
+    it('pisco', async () => {
+      terra.tx.decode(
+        'CsIBCp4BCiMvY29zbW9zLnN0YWtpbmcudjFiZXRhMS5Nc2dEZWxlZ2F0ZRJ3Cix0ZXJyYTF6ZHBnajhhbTVucXF2aHQ5MjdrM2V0bGp5bDZhNTJrd3F1cDBqZRIzdGVycmF2YWxvcGVyMXpkcGdqOGFtNW5xcXZodDkyN2szZXRsanlsNmE1Mmt3cW5kanoyGhIKBXVsdW5hEgkxMDQ3ODQwMDYSH2J5LiBodHRwczovL2dpdGh1Yi5jb20vZW1pZGV2OTgSagpSCkYKHy9jb3Ntb3MuY3J5cHRvLnNlY3AyNTZrMS5QdWJLZXkSIwohA+Q1ZNHkGfabYf1wRUdLcaJHlqDC62Llxam8fKgoH6mZEgQKAggBGJPWChIUCg4KBXVsdW5hEgUzNTk4MxCJ0g4aQOQgfKscECIN6Z6NtfWwEiZ2nxnnjdfZEVq4f2ypIm1QLY8Oo60Rfbe6Y10leA4bL5fPRHp8GC7d9hmrhtDVlXc='
+      );
+    });
+  });
+
   describe('broadcast', () => {
     beforeEach(() => {
       // Need to respond to requests made by createAndSignTx.
diff --git a/src/client/lcd/api/TxAPI.ts b/src/client/lcd/api/TxAPI.ts
index 9943ed147..0b2f5b366 100644
--- a/src/client/lcd/api/TxAPI.ts
+++ b/src/client/lcd/api/TxAPI.ts
@@ -383,7 +383,10 @@ export class TxAPI extends BaseAPI {
    * @param tx transaction string to decode
    */
   public decode(encodedTx: string): Tx {
-    return Tx.fromBuffer(Buffer.from(encodedTx, 'base64'));
+    return Tx.fromBuffer(
+      Buffer.from(encodedTx, 'base64'),
+      this.lcd.config.isClassic
+    );
   }
 
   /**