diff --git a/SFTPSyncLib/RemoteSync.cs b/SFTPSyncLib/RemoteSync.cs
index 0973ba5..463343d 100644
--- a/SFTPSyncLib/RemoteSync.cs
+++ b/SFTPSyncLib/RemoteSync.cs
@@ -364,7 +364,7 @@ private static async Task CreateDirectoriesInternal(
                     return item.Name.Remove(item.Name.IndexOf(".DIR", StringComparison.OrdinalIgnoreCase));
                 else
                     return item.Name;
-            });
+            }, StringComparer.OrdinalIgnoreCase);
 
             foreach (var item in localDirectories)
             {
@@ -741,6 +741,14 @@ private async void Fsw_DirectoryRenamed(object? sender, RenamedEventArgs arg)
                 var oldRemotePath = GetRemotePathForLocal(arg.OldFullPath);
                 var newRemotePath = GetRemotePathForLocal(arg.FullPath);
 
+                // OpenVMS directory names preserve case but are case-insensitive. A case-only
+                // local rename therefore refers to the same remote directory and needs no action.
+                if (string.Equals(oldRemotePath, newRemotePath, StringComparison.OrdinalIgnoreCase))
+                {
+                    Logger.LogInfo($"Ignoring case-only directory rename: {oldRemotePath} -> {newRemotePath}");
+                    return;
+                }
+
                 await _sftpLock.WaitAsync();
                 try
                 {