diff --git a/flake.nix b/flake.nix
index 9873c1c949717..7ea1236f4759a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 # Experimental flake interface to Nixpkgs.
 # See https://github.com/NixOS/rfcs/pull/49 for details.
 {
-  description = "A collection of packages for the Nix package manager";
+  description = "A collection of packages for the Nix package manager.";
 
   outputs = { self }:
     let