diff --git a/src/PactNet/Drivers/HttpPactDriver.cs b/src/PactNet/Drivers/HttpPactDriver.cs
index 8c010144..52026bff 100644
--- a/src/PactNet/Drivers/HttpPactDriver.cs
+++ b/src/PactNet/Drivers/HttpPactDriver.cs
@@ -40,8 +40,7 @@ public IHttpInteractionDriver NewHttpInteraction(string description)
         /// <exception cref="InvalidOperationException">Failed to start mock server</exception>
         public IMockServerDriver CreateMockServer(string host, int? port, bool tls)
         {
-            string addrStr = $"{host}:{port.GetValueOrDefault(0)}";
-            int result = NativeInterop.CreateMockServerForPact(this.pact, addrStr, tls);
+            int result = NativeInterop.CreateMockServerForTransport(this.pact, host, (ushort)port.GetValueOrDefault(0), "http", null);
 
             if (result > 0)
             {
diff --git a/src/PactNet/Interop/NativeInterop.cs b/src/PactNet/Interop/NativeInterop.cs
index 71aeabff..92bdc911 100644
--- a/src/PactNet/Interop/NativeInterop.cs
+++ b/src/PactNet/Interop/NativeInterop.cs
@@ -15,8 +15,8 @@ internal static class NativeInterop
 
         #region Http Interop Support
 
-        [DllImport(DllName, EntryPoint = "pactffi_create_mock_server_for_pact")]
-        public static extern int CreateMockServerForPact(PactHandle pact, string addrStr, bool tls);
+        [DllImport(DllName, EntryPoint = "pactffi_create_mock_server_for_transport")]
+        public static extern int CreateMockServerForTransport(PactHandle pact, string addrStr, ushort port, string transport, string transportConfig);
 
         [DllImport(DllName, EntryPoint = "pactffi_mock_server_mismatches")]
         public static extern IntPtr MockServerMismatches(int mockServerPort);