diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/IdentityServer/IdentityServerDataSeedContributor.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/IdentityServer/IdentityServerDataSeedContributor.cs
index d738cb8217..8ef6404e48 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/IdentityServer/IdentityServerDataSeedContributor.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Domain/IdentityServer/IdentityServerDataSeedContributor.cs
@@ -311,7 +311,7 @@ namespace MyCompanyName.MyProjectName.IdentityServer
             {
                 foreach (var origin in corsOrigins)
                 {
-                    if (client.FindCorsOrigin(origin) == null)
+                    if (!origin.IsNullOrWhiteSpace() && client.FindCorsOrigin(origin) == null)
                     {
                         client.AddCorsOrigin(origin);
                     }
diff --git a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/IdentityServer/IdentityServerDataSeedContributor.cs b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/IdentityServer/IdentityServerDataSeedContributor.cs
index d738cb8217..8ef6404e48 100644
--- a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/IdentityServer/IdentityServerDataSeedContributor.cs
+++ b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/IdentityServer/IdentityServerDataSeedContributor.cs
@@ -311,7 +311,7 @@ namespace MyCompanyName.MyProjectName.IdentityServer
             {
                 foreach (var origin in corsOrigins)
                 {
-                    if (client.FindCorsOrigin(origin) == null)
+                    if (!origin.IsNullOrWhiteSpace() && client.FindCorsOrigin(origin) == null)
                     {
                         client.AddCorsOrigin(origin);
                     }