diff --git a/Tutorial/2_TwoPhaseCommit/PForeign/ForeignCode.cs b/Tutorial/2_TwoPhaseCommit/PForeign/ForeignCode.cs
index c8b9af5a15..8c9ce3176f 100644
--- a/Tutorial/2_TwoPhaseCommit/PForeign/ForeignCode.cs
+++ b/Tutorial/2_TwoPhaseCommit/PForeign/ForeignCode.cs
@@ -3,9 +3,9 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.IO;
-using Plang.CSharpRuntime;
-using Plang.CSharpRuntime.Values;
-using Plang.CSharpRuntime.Exceptions;
+using PChecker.PRuntime;
+using PChecker.PRuntime.Values;
+using PChecker.PRuntime.Exceptions;
 using System.Threading;
 using System.Threading.Tasks;