diff --git a/DD.Persistence.Database.Postgres.Test/DbFixture.cs b/DD.Persistence.Database.Postgres.Test/DbFixture.cs
index cb1d153..c3a0c64 100644
--- a/DD.Persistence.Database.Postgres.Test/DbFixture.cs
+++ b/DD.Persistence.Database.Postgres.Test/DbFixture.cs
@@ -6,7 +6,7 @@ using Microsoft.Extensions.DependencyInjection;
 namespace DD.Persistence.Database.Postgres.Test;
 public class DbFixture : IDisposable
 {
-    public string connectionString { get; }
+    private string connectionString { get; }
     public ServiceProvider serviceProvider { get; private set; }
 
     public DbFixture()
diff --git a/DD.Persistence.Database.Postgres.Test/UnitTestCheckHyperTables.cs b/DD.Persistence.Database.Postgres.Test/UnitTestCheckHyperTables.cs
index f0b8749..3179a67 100644
--- a/DD.Persistence.Database.Postgres.Test/UnitTestCheckHyperTables.cs
+++ b/DD.Persistence.Database.Postgres.Test/UnitTestCheckHyperTables.cs
@@ -9,12 +9,10 @@ namespace DD.Persistence.Database.Postgres.Test;
 public class UnitTestCheckHyperTables : IClassFixture<DbFixture>
 {
     private ServiceProvider _serviceProvider;
-    private string _connectionString;
 
     public UnitTestCheckHyperTables(DbFixture fixture)
     {
         _serviceProvider = fixture.serviceProvider;
-        _connectionString = fixture.connectionString;
     }
 
     [Fact]