diff --git a/QuantConnect.SamcoBrokerage.Tests/SamcoSymbolMapperTests.cs b/QuantConnect.SamcoBrokerage.Tests/SamcoSymbolMapperTests.cs
index 6b66ba2..3207034 100644
--- a/QuantConnect.SamcoBrokerage.Tests/SamcoSymbolMapperTests.cs
+++ b/QuantConnect.SamcoBrokerage.Tests/SamcoSymbolMapperTests.cs
@@ -43,7 +43,7 @@ public void GetExchangeWithListingID(string listingID, string expectedExchange)
         }
 
         [TestCase("tcs")]
-        [TestCase("hdfc")]
+        [TestCase("ltts")]
         public void IsKnownBrokerageSymbol(string symbol)
         {
             Assert.IsTrue(_symbolMapper.IsKnownBrokerageSymbol(symbol));