diff --git a/doc/manual/src/hacking.md b/doc/manual/src/hacking.md
index fa4be54e..91e26cdb 100644
--- a/doc/manual/src/hacking.md
+++ b/doc/manual/src/hacking.md
@@ -9,7 +9,7 @@ $ cd hydra
 ```
 
 To enter a shell in which all environment variables (such as `PERL5LIB`)
-are set up so that those dependencies can be found:
+and dependencies can be found:
 
 ```console
 $ nix-shell