diff --git a/samples/IdentityServer/Pages/TestUsers.cs b/samples/IdentityServer/Pages/TestUsers.cs
index 0b51c76f..c5f70da5 100644
--- a/samples/IdentityServer/Pages/TestUsers.cs
+++ b/samples/IdentityServer/Pages/TestUsers.cs
@@ -36,9 +36,9 @@ public static List<TestUser> Users
                             new Claim(JwtClaimTypes.Name, "Alice Smith"),
                             new Claim(JwtClaimTypes.GivenName, "Alice"),
                             new Claim(JwtClaimTypes.FamilyName, "Smith"),
-                            new Claim(JwtClaimTypes.Email, "AliceSmith@email.com"),
+                            new Claim(JwtClaimTypes.Email, "AliceSmith@example.com"),
                             new Claim(JwtClaimTypes.EmailVerified, "true", ClaimValueTypes.Boolean),
-                            new Claim(JwtClaimTypes.WebSite, "http://alice.com"),
+                            new Claim(JwtClaimTypes.WebSite, "http://alice.example.com"),
                             new Claim(JwtClaimTypes.Address, JsonSerializer.Serialize(address), IdentityServerConstants.ClaimValueTypes.Json)
                         }
                     },
@@ -52,9 +52,9 @@ public static List<TestUser> Users
                             new Claim(JwtClaimTypes.Name, "Bob Smith"),
                             new Claim(JwtClaimTypes.GivenName, "Bob"),
                             new Claim(JwtClaimTypes.FamilyName, "Smith"),
-                            new Claim(JwtClaimTypes.Email, "BobSmith@email.com"),
+                            new Claim(JwtClaimTypes.Email, "BobSmith@example.com"),
                             new Claim(JwtClaimTypes.EmailVerified, "true", ClaimValueTypes.Boolean),
-                            new Claim(JwtClaimTypes.WebSite, "http://bob.com"),
+                            new Claim(JwtClaimTypes.WebSite, "http://bob.example.com"),
                             new Claim(JwtClaimTypes.Address, JsonSerializer.Serialize(address), IdentityServerConstants.ClaimValueTypes.Json)
                         }
                     }