diff --git a/README.md b/README.md
index 2685ba6..ce2ce00 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,6 @@ $ ./godns -h
 Usage of ./godns:
   -c string
         Specify a config file (default "./config.json")
-  -d    Run it as docker mode
   -h    Show help
 ```