diff --git a/test/api-test.js b/test/api-test.js
index 0f300b97..79c29622 100644
--- a/test/api-test.js
+++ b/test/api-test.js
@@ -4,6 +4,7 @@ const _ = require('lodash');
 const assert = require('assert-diff');
 const path = require('path');
 const setupAPI = require('./setup-api');
+const RippleAPI = require('../src').RippleAPI;
 const fixtures = require('./fixtures/api');
 const requests = fixtures.requests;
 const responses = fixtures.responses;
@@ -737,3 +738,27 @@ describe('RippleAPI', function() {
   });
 
 });
+
+describe('RippleAPI - offline', function() {
+  it('prepareSettings and sign', function(done) {
+    const api = new RippleAPI();
+    const secret = 'shsWGZcmZz6YsWWmcnpfr6fLTdtFV';
+    const settings = requests.prepareSettings;
+    const instructions = {
+      sequence: 23,
+      maxLedgerVersion: 8820051,
+      fee: '0.000012'
+    };
+    api.prepareSettings(address, settings, instructions, (error, txJSON) => {
+      if (error) {
+        done(error);
+        return;
+      }
+      assert.deepEqual(txJSON, responses.prepareSettings.flags);
+      withDeterministicPRNG(() => {
+        assert.deepEqual(api.sign(txJSON, secret), responses.sign);
+        done();
+      });
+    });
+  });
+});
diff --git a/test/fixtures/api/requests/sign.json b/test/fixtures/api/requests/sign.json
index 79ba1875..7226e3c9 100644
--- a/test/fixtures/api/requests/sign.json
+++ b/test/fixtures/api/requests/sign.json
@@ -1,9 +1,9 @@
 {
   "Flags": 0,
   "TransactionType": "AccountSet",
-  "Account": "r3GgMwvgvP8h4yVWvjH1dPZNvC37TjzBBE",
+  "Account": "r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59",
   "Domain": "726970706C652E636F6D",
-  "LastLedgerSequence": 8820052,
+  "LastLedgerSequence": 8820051,
   "Fee": "12",
   "Sequence": 23
 }
diff --git a/test/fixtures/api/responses/prepare-settings-signed.json b/test/fixtures/api/responses/prepare-settings-signed.json
new file mode 100644
index 00000000..a060e773
--- /dev/null
+++ b/test/fixtures/api/responses/prepare-settings-signed.json
@@ -0,0 +1,4 @@
+{
+  "signedTransaction": "12000322000000002400000017201B0086955368400000000000000C732102F89EAEC7667B30F33D0687BBA86C3FE2A08CCA40A9186C5BDE2DAA6FA97A37D87446304402207660BDEF67105CE1EBA9AD35DC7156BAB43FF1D47633199EE257D70B6B9AAFBF022045A812486A675750B5A3F37131E9F92299728D37FF6BB7195CA5EE881268CB4C770A726970706C652E636F6D81145E7B112523F68D2F5E879DB4EAC51C6698A69304",
+  "id": "29D23159EBA79170DCA5EF467CBC15114DBD35B7A8C3DBF76809BA354D00D250"
+}
diff --git a/test/fixtures/api/responses/sign.json b/test/fixtures/api/responses/sign.json
index 0ada1ccf..a060e773 100644
--- a/test/fixtures/api/responses/sign.json
+++ b/test/fixtures/api/responses/sign.json
@@ -1,4 +1,4 @@
 {
-  "signedTransaction": "12000322000000002400000017201B0086955468400000000000000C732102F89EAEC7667B30F33D0687BBA86C3FE2A08CCA40A9186C5BDE2DAA6FA97A37D87446304402207660BDEF67105CE1EBA9AD35DC7156BAB43FF1D47633199EE257D70B6B9AAFBF02207F5517BC8AEF2ADC1325897ECDBA8C673838048BCA62F4E98B252F19BE88796D770A726970706C652E636F6D81144FBFF73DA4ECF9B701940F27341FA8020C313443",
-  "id": "DB44C111583A95AF973A0B0A40348D90512FCBCDDCA3315A286D2BF4FAC100F1"
+  "signedTransaction": "12000322000000002400000017201B0086955368400000000000000C732102F89EAEC7667B30F33D0687BBA86C3FE2A08CCA40A9186C5BDE2DAA6FA97A37D87446304402207660BDEF67105CE1EBA9AD35DC7156BAB43FF1D47633199EE257D70B6B9AAFBF022045A812486A675750B5A3F37131E9F92299728D37FF6BB7195CA5EE881268CB4C770A726970706C652E636F6D81145E7B112523F68D2F5E879DB4EAC51C6698A69304",
+  "id": "29D23159EBA79170DCA5EF467CBC15114DBD35B7A8C3DBF76809BA354D00D250"
 }