diff --git a/configuration.nix b/configuration.nix
index 4f5e083..e4b45d7 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -1,6 +1,6 @@
 # Edit this configuration file to define what should be installed on
 # your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
+# and in the NixOS manual (accessible by running 'nixos-help').
 
 { config, pkgs, lib, inputs,  ... }:
 
diff --git a/desktop_environnement.nix b/desktop_environnement.nix
index 1bdfd72..8e5d013 100644
--- a/desktop_environnement.nix
+++ b/desktop_environnement.nix
@@ -1,6 +1,6 @@
 # Edit this configuration file to define what should be installed on
 # your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
+# and in the NixOS manual (accessible by running 'nixos-help').
 
 { config, pkgs, lib, inputs,  ... }:
 
diff --git a/hardware-configuration.nix b/hardware-configuration.nix
index 4faf187..0188fad 100644
--- a/hardware-configuration.nix
+++ b/hardware-configuration.nix
@@ -1,4 +1,4 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# Do not modify this file!  It was generated by `nixos-generate-config`
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
 { config, lib, pkgs, modulesPath, ... }:
diff --git a/serveur_web.nix b/serveur_web.nix
index de1754c..6cef65e 100644
--- a/serveur_web.nix
+++ b/serveur_web.nix
@@ -1,6 +1,6 @@
 # Edit this configuration file to define what should be installed on
 # your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
+# and in the NixOS manual (accessible by running `nixos-help`).
 
 { config, pkgs, lib, ... }:
 
diff --git a/system_packages.nix b/system_packages.nix
index 7042ac4..105da73 100644
--- a/system_packages.nix
+++ b/system_packages.nix
@@ -1,6 +1,6 @@
 # Edit this configuration file to define what should be installed on
 # your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
+# and in the NixOS manual (accessible by running `nixos-help`).
 #{nixpkgs, nixpkgs_unstable, nix_software_center}:
 
 { config, pkgs, lib, inputs, ... }: