diff --git a/GitTfs/Commands/CheckinBase.cs b/GitTfs/Commands/CheckinBase.cs
index 8d7a57c8..a11dd8f9 100644
--- a/GitTfs/Commands/CheckinBase.cs
+++ b/GitTfs/Commands/CheckinBase.cs
@@ -47,7 +47,7 @@ namespace Sep.Git.Tfs.Commands
             else
             {
                 _stdout.WriteLine("TFS Changeset #" + newChangesetId + " was created. Marking it as a merge commit...");
-                parentChangeset.Remote.FetchWithMerge(newChangesetId, false, null, refToCheckin);
+                parentChangeset.Remote.FetchWithMerge(newChangesetId, false, refToCheckin);
 
                 if (refToCheckin == "HEAD")
                     parentChangeset.Remote.Repository.Merge(parentChangeset.Remote.MaxCommitHash);
diff --git a/GitTfs/Commands/Rcheckin.cs b/GitTfs/Commands/Rcheckin.cs
index 1a1427c1..37e2c6c5 100644
--- a/GitTfs/Commands/Rcheckin.cs
+++ b/GitTfs/Commands/Rcheckin.cs
@@ -142,7 +142,7 @@ namespace Sep.Git.Tfs.Commands
                 try
                 {
                     newChangesetId = tfsRemote.Checkin(target, currentParent, parentChangeset, commitSpecificCheckinOptions, tfsRepositoryPathOfMergedBranch);
-                    var fetchResult = tfsRemote.FetchWithMerge(newChangesetId, false, null, rc.Parents);
+                    var fetchResult = tfsRemote.FetchWithMerge(newChangesetId, false, rc.Parents);
                     if (fetchResult.NewChangesetCount != 1)
                     {
                         var lastCommit = _globals.Repository.FindCommitHashByChangesetId(newChangesetId);
@@ -210,7 +210,7 @@ namespace Sep.Git.Tfs.Commands
 
                 _stdout.WriteLine("Starting checkin of {0} '{1}'", target.Substring(0, 8), commitSpecificCheckinOptions.CheckinComment);
                 long newChangesetId = tfsRemote.Checkin(rc.Sha, parentChangeset, commitSpecificCheckinOptions, tfsRepositoryPathOfMergedBranch);
-                tfsRemote.FetchWithMerge(newChangesetId, false, null, rc.Parents);
+                tfsRemote.FetchWithMerge(newChangesetId, false, rc.Parents);
                 if (tfsRemote.MaxChangesetId != newChangesetId)
                     throw new GitTfsException("error: New TFS changesets were found. Rcheckin was not finished.");
 
diff --git a/GitTfs/Core/IGitTfsRemote.cs b/GitTfs/Core/IGitTfsRemote.cs
index 3670a218..110e3178 100644
--- a/GitTfs/Core/IGitTfsRemote.cs
+++ b/GitTfs/Core/IGitTfsRemote.cs
@@ -73,4 +73,12 @@ namespace Sep.Git.Tfs.Core
         void EnsureTfsAuthenticated();
         bool MatchesUrlAndRepositoryPath(string tfsUrl, string tfsRepositoryPath);
     }
+
+    public static class IGitTfsRemoteExt
+    {
+        public static IFetchResult FetchWithMerge(this IGitTfsRemote remote, long mergeChangesetId, bool stopOnFailMergeCommit = false, params string[] parentCommitsHashes)
+        {
+            return remote.FetchWithMerge(mergeChangesetId, stopOnFailMergeCommit, null, parentCommitsHashes);
+        }
+    }
 }