diff --git a/LibGit2Sharp/Identity.cs b/LibGit2Sharp/Identity.cs
index 207e24267..38c1824d7 100644
--- a/LibGit2Sharp/Identity.cs
+++ b/LibGit2Sharp/Identity.cs
@@ -20,7 +20,7 @@ public Identity(string name, string email)
             Ensure.ArgumentNotNullOrEmptyString(name, "name");
             Ensure.ArgumentNotNullOrEmptyString(email, "email");
             Ensure.ArgumentDoesNotContainZeroByte(name, "name");
-            Ensure.ArgumentDoesNotContainZeroByte(name, "email");
+            Ensure.ArgumentDoesNotContainZeroByte(email, "email");
 
             _name = name;
             _email = email;