diff --git a/test/EFCore.PG.FunctionalTests/Query/NorthwindQueryNpgsqlFixture.cs b/test/EFCore.PG.FunctionalTests/Query/NorthwindQueryNpgsqlFixture.cs
index c74ed4633..da3465a61 100644
--- a/test/EFCore.PG.FunctionalTests/Query/NorthwindQueryNpgsqlFixture.cs
+++ b/test/EFCore.PG.FunctionalTests/Query/NorthwindQueryNpgsqlFixture.cs
@@ -11,15 +11,6 @@ public class NorthwindQueryNpgsqlFixture<TModelCustomizer> : NorthwindQueryRelat
     protected override ITestStoreFactory TestStoreFactory => NpgsqlNorthwindTestStoreFactory.Instance;
     protected override Type ContextType => typeof(NorthwindNpgsqlContext);
 
-    static NorthwindQueryNpgsqlFixture()
-    {
-        // TODO: Switch to using NpgsqlDataSource
-#pragma warning disable CS0618 // Type or member is obsolete
-        NpgsqlConnection.GlobalTypeMapper.EnableDynamicJsonMappings();
-        NpgsqlConnection.GlobalTypeMapper.EnableRecordsAsTuples();
-#pragma warning restore CS0618 // Type or member is obsolete
-    }
-
     public override DbContextOptionsBuilder AddOptions(DbContextOptionsBuilder builder)
     {
         var optionsBuilder = base.AddOptions(builder);
diff --git a/test/EFCore.PG.FunctionalTests/TestUtilities/NpgsqlNorthwindTestStoreFactory.cs b/test/EFCore.PG.FunctionalTests/TestUtilities/NpgsqlNorthwindTestStoreFactory.cs
index 856dabef9..f7329fc55 100644
--- a/test/EFCore.PG.FunctionalTests/TestUtilities/NpgsqlNorthwindTestStoreFactory.cs
+++ b/test/EFCore.PG.FunctionalTests/TestUtilities/NpgsqlNorthwindTestStoreFactory.cs
@@ -6,6 +6,15 @@ public class NpgsqlNorthwindTestStoreFactory : NpgsqlTestStoreFactory
     public static readonly string NorthwindConnectionString = NpgsqlTestStore.CreateConnectionString(Name);
     public new static NpgsqlNorthwindTestStoreFactory Instance { get; } = new();
 
+    static NpgsqlNorthwindTestStoreFactory()
+    {
+        // TODO: Switch to using NpgsqlDataSource
+#pragma warning disable CS0618 // Type or member is obsolete
+        NpgsqlConnection.GlobalTypeMapper.EnableDynamicJsonMappings();
+        NpgsqlConnection.GlobalTypeMapper.EnableRecordsAsTuples();
+#pragma warning restore CS0618 // Type or member is obsolete
+    }
+
     protected NpgsqlNorthwindTestStoreFactory()
     {
     }
@@ -15,4 +24,4 @@ public override TestStore GetOrCreate(string storeName)
             TestEnvironment.PostgresVersion >= new Version(12, 0)
                 ? @"CREATE COLLATION IF NOT EXISTS ""some-case-insensitive-collation"" (LOCALE = 'en-u-ks-primary', PROVIDER = icu, DETERMINISTIC = False);"
                 : null);
-}
\ No newline at end of file
+}