diff --git a/ClickHouse.Driver/ADO/ClickHouseConnection.cs b/ClickHouse.Driver/ADO/ClickHouseConnection.cs
index 1697e02..e9368f4 100644
--- a/ClickHouse.Driver/ADO/ClickHouseConnection.cs
+++ b/ClickHouse.Driver/ADO/ClickHouseConnection.cs
@@ -52,8 +52,13 @@ public ClickHouseConnection()
         : this(string.Empty)
     {
     }
+    
+    public ClickHouseConnection(string connectionString)
+    {
+        ConnectionString = connectionString;
+    }
 
-    public ClickHouseConnection(string connectionString, bool skipServerCertificateValidation = false)
+    public ClickHouseConnection(string connectionString, bool skipServerCertificateValidation)
     {
         SkipServerCertificateValidation = skipServerCertificateValidation;
         ConnectionString = connectionString;