diff --git a/nixos/modules/installer/cd-dvd/iso-image.nix b/nixos/modules/installer/cd-dvd/iso-image.nix
index 4fc8bf5428f8..fea1c8849537 100644
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@@ -178,7 +178,7 @@ in
         image. It significantly increases image size. Use that when
         you want to be able to keep all the sources needed to build your
         system or when you are going to install the system on a computer
-        with slow on non-existent network connection.
+        with slow or non-existent network connection.
       '';
     };