1 files changed, 1 insertions, 1 deletions
diff --git a/SendGrid/Tests/TestSendgridMessageSetup.cs b/SendGrid/Tests/TestSendgridMessageSetup.cs
index 474b03f..fa3db72 100755
--- a/SendGrid/Tests/TestSendgridMessageSetup.cs
+++ b/SendGrid/Tests/TestSendgridMessageSetup.cs
@@ -119,7 +119,7 @@ namespace Tests
             var mock = new Mock<IHeader>();
 
             var sg = new SendGrid(mock.Object);
-            sg.AddUniqueIdentifier(kvp);
+            sg.AddUniqueIdentifiers(kvp);
 
             mock.Verify(foo => foo.AddUniqueIdentifier(kvp));
         }