diff --git a/src/Core/Models/Api/Request/Organizations/ImportOrganizationUsersRequestModel.cs b/src/Core/Models/Api/Request/Organizations/ImportOrganizationUsersRequestModel.cs
index 97b6c783f0..1178590bf3 100644
--- a/src/Core/Models/Api/Request/Organizations/ImportOrganizationUsersRequestModel.cs
+++ b/src/Core/Models/Api/Request/Organizations/ImportOrganizationUsersRequestModel.cs
@@ -48,7 +48,7 @@ namespace Bit.Core.Models.Api
             {
                 var importedUser = new ImportedOrganizationUser
                 {
-                    Email = Email,
+                    Email = Email.ToLowerInvariant(),
                     ExternalId = ExternalId
                 };