diff --git a/examples/taxis/README.md b/examples/taxis/README.md
index 984fe11..57859f9 100644
--- a/examples/taxis/README.md
+++ b/examples/taxis/README.md
@@ -11,7 +11,7 @@ First of all you need a running instance of Beaver. For instance, you can to the
 Beaver is being run in a Docker container. You'll interact with it from your host machine. You need to install some Python dependencies to do that. We'll install them in a virtual environment 🐍
 
 ```sh
-venv .venv
+venv .venv # may be `virtualenv .venv` depending on your environment
 source .venv/bin/activate
 pip install -r requirements.txt
 
@@ -31,7 +31,7 @@ After notebook has started, make sure that selected kernel is `venv`
 Now we can simulate traffic. The order is the same as what happened in production. This is because we know the departure and arrival times of each taxi trip, and can thus reproduce the exact same timeline. We'll apply a x15 speed-up to make things more exciting ⚡️
 
 ```sh
-python simulate.py --speed 15
+python simulate.py 15
 ```