diff --git a/README.md b/README.md
index b398788..19f4b8b 100644
--- a/README.md
+++ b/README.md
@@ -146,7 +146,8 @@ zus base64 -f FILE_PATH
 
 ```Shell
 zus dbase64 bXlfdGV4dA==
-zus dbase64 -f bXlfdGV4dA== //store decoded data into txt file
+zus dbase64 -o bXlfdGV4dA== //store decoded data into txt file
+zus dbase64 -f FILE_PATH
 ```
 
 > output: my_text
diff --git a/Zus.Cli/Program.cs b/Zus.Cli/Program.cs
index 198ba0a..5bbf3c7 100644
--- a/Zus.Cli/Program.cs
+++ b/Zus.Cli/Program.cs
@@ -82,9 +82,14 @@
 })
     .WithDescription("Return encoded base64 of input.");
 
-app.AddCommand("dbase64", async ([Option('f', Description = "Open decoded data in text editor")] bool? file, [Argument] string data) =>
+app.AddCommand("dbase64", async ([Option('f', Description = "Read data from file")] bool? file, [Option('o', Description = "Open decoded data in text editor")] bool? output, [Argument] string data) =>
 {
-    if (file.HasValue && file.Value == true)
+    if(file.HasValue && file.Value == true)
+    {
+        var fileReaderService = ServiceFactory.GetFileReaderService(data);
+        data = await fileReaderService.GetAsync();
+    }
+    if (output.HasValue && output.Value == true)
     {
         var tempFileService = ServiceFactory.GetTempFileService();
         var decodeToFileResult = await Base64.DecodeToFile(tempFileService, data);