diff --git a/README.md b/README.md
index b282182..aab4742 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ The installation steps assume you will keep your python virtual envs in a folder
 6- $ pip install -r requirements.txt                           // install sublist3r module dependencies.
 7- $ python sublist3r.py -d domain.com                         // run sublist3r.py from within activated environment
 8- $ deactivate                                                // deactivate environment once done runnning the script.
-note: do not use sudo.
+note: do not use sudo. **Activate/deactivate virtual env. before/after each use**
 ```
 
 ## Usage