diff --git a/nixos/modules/services/databases/postgresql.nix b/nixos/modules/services/databases/postgresql.nix
index f656e236b36..284e2878d64 100644
--- a/nixos/modules/services/databases/postgresql.nix
+++ b/nixos/modules/services/databases/postgresql.nix
@@ -95,7 +95,7 @@ in
         default = [];
         example = [ "--data-checksums" "--allow-group-access" ];
         description = ''
-          Additional arguments passed to <literal>initdb<literal> during data dir
+          Additional arguments passed to <literal>initdb</literal> during data dir
           initialisation.
         '';
       };