diff --git a/core/src/main/kotlin/core/inference/ResRenjuClient.kt b/core/src/main/kotlin/core/inference/ResRenjuClient.kt
index fdc65ff..8062cb7 100644
--- a/core/src/main/kotlin/core/inference/ResRenjuClient.kt
+++ b/core/src/main/kotlin/core/inference/ResRenjuClient.kt
@@ -7,6 +7,7 @@ import engine.util.SolutionExtension
 import inference.InferenceGrpcKt
 import inference.InferenceProto
 import io.grpc.ManagedChannel
+import io.grpc.ManagedChannelBuilder
 import renju.Board
 import renju.notation.Color
 import renju.protocol.AiPreset
@@ -104,19 +105,12 @@ class ResRenjuClient(private val channel: ManagedChannel) : Closeable {
 
     companion object {
 
-        @Suppress("IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION")
-        private val dummyClient: ResRenjuClient by lazy {
-            throw NotImplementedError()
-        }
-
-        @Suppress("UNUSED_PARAMETER")
         fun connectionFrom(serverAddress: String, serverPort: Int): ResRenjuClient =
-            dummyClient
-//            ResRenjuClient(
-//                ManagedChannelBuilder
-//                    .forAddress(serverAddress, serverPort)
-//                    .build()
-//            )
+            ResRenjuClient(
+                ManagedChannelBuilder
+                    .forAddress(serverAddress, serverPort)
+                    .build()
+            )
 
     }