diff --git a/modules/account-lib/src/index.ts b/modules/account-lib/src/index.ts
index 099950772f..11d9a7b1fe 100644
--- a/modules/account-lib/src/index.ts
+++ b/modules/account-lib/src/index.ts
@@ -232,6 +232,7 @@ const coinBuilderMap = {
   teth: Eth.TransactionBuilder,
   gteth: Eth.TransactionBuilder,
   hteth: Eth.TransactionBuilder,
+  sepeth: Eth.TransactionBuilder,
   rbtc: Rbtc.TransactionBuilder,
   trbtc: Rbtc.TransactionBuilder,
   celo: Celo.TransactionBuilder,
diff --git a/modules/account-lib/test/unit/index.ts b/modules/account-lib/test/unit/index.ts
index fb75f6102d..b27f734a99 100644
--- a/modules/account-lib/test/unit/index.ts
+++ b/modules/account-lib/test/unit/index.ts
@@ -5,4 +5,11 @@ describe('Coin factory', () => {
   it('should fail to instantiate an unsupported coin', () => {
     assert.throws(() => getBuilder('fakeUnsupported'));
   });
+
+  it('should return the ETH builder for sepeth', () => {
+    const sepethBuilder = getBuilder('sepeth');
+    const htethBuilder = getBuilder('hteth');
+    assert.ok(sepethBuilder);
+    assert.strictEqual(sepethBuilder.constructor, htethBuilder.constructor);
+  });
 });