diff --git a/src/Umbraco.Infrastructure/Persistence/UmbracoDatabaseFactory.cs b/src/Umbraco.Infrastructure/Persistence/UmbracoDatabaseFactory.cs
index d018abf8e4..0f973101e3 100644
--- a/src/Umbraco.Infrastructure/Persistence/UmbracoDatabaseFactory.cs
+++ b/src/Umbraco.Infrastructure/Persistence/UmbracoDatabaseFactory.cs
@@ -280,7 +280,7 @@ namespace Umbraco.Cms.Infrastructure.Persistence
             // add all registered mappers for NPoco
             _pocoMappers.AddRange(_npocoMappers);
 
-            _pocoMappers.AddRange(_npocoMappers);
+            _pocoMappers.AddRange(_dbProviderFactoryCreator.ProviderSpecificMappers(_providerName));
 
             var factory = new FluentPocoDataFactory(GetPocoDataFactoryResolver);
             _pocoDataFactory = factory;