diff --git a/doc/manual/development.xml b/doc/manual/development.xml
index 4ae2ba03896..0278c617d51 100644
--- a/doc/manual/development.xml
+++ b/doc/manual/development.xml
@@ -359,9 +359,9 @@ $ qemu-system-x86_64 -kernel ./kernel/bzImage -initrd ./initrd/initrd -hda /dev/
The tests/ directory in the NixOS source tree
contains several whole-system unit tests.
- These tests can be runNixOS tests can be run both from
+ These tests can be runNixOS tests can be run both from
NixOS and from a non-NixOS GNU/Linux distribution, provided the
- Nix package manager is installed. from the NixOS
+ Nix package manager is installed. from the NixOS
source tree as follows: