diff --git a/README.md b/README.md
index 8662afc..0045ca8 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ redirect-gateway def1
 
 ### Step1
 
-Run Run_obsf4proxy or ./bin/ptproxy.py -c ./config/YOURCONFIG.json
+Run Run_obsf4proxy or ./bin/ptproxy.py -c ./config/YOURCONFIG.json (sudo required for linux)
 
 ### Step2