diff --git a/docs/contribute/core.qmd b/docs/contribute/core.qmd
index e54755f30..cd611748f 100644
--- a/docs/contribute/core.qmd
+++ b/docs/contribute/core.qmd
@@ -84,8 +84,8 @@ However, here, you don't have the dependencies available in the `[extras]` secti
 When you then debug your tests inside the REPL, you can include the `[extras]` dependencies as follows:
 
 ```julia
-using TestEnv
-TestEnv.activate()
+using TestEnv,
+TestEnv.activate("Ribasim")
 ```
 
 ## Render documentation