diff --git a/slides/python.md b/slides/python.md
index 63cac18dad8ccaac46356e02de339a56424315aa..b94a271d18eb53d3f274a4ba4fa6a44fcf6c2111 100644
--- a/slides/python.md
+++ b/slides/python.md
@@ -15,7 +15,10 @@ title: Python bindings
 * Enabled and built by default!
 * `dune-common` configures a [Python virtual environment](https://docs.python.org/3/library/venv.html) (`dune-common/build-cmake/dune-env`)
 * Automatically created and set up when running `dunecontrol`
-* To activate: `source dune-common/build-cmake/dune-env/bin/activate`
+* To activate:
+  ```sh
+  source dune-common/build-cmake/dune-env/bin/activate
+  ```
 
 ## Configuration