diff --git a/nix/configurations/vanadium/nixos/display.nix b/nix/configurations/vanadium/nixos/display.nix
index cccc8ef2..43e9f953 100644
--- a/nix/configurations/vanadium/nixos/display.nix
+++ b/nix/configurations/vanadium/nixos/display.nix
@@ -69,7 +69,7 @@
               device, # obtain with `xrandr`
               brightness, # [0..1]
             }:
-            singleton "10_xrandr_brightness" ''
+            singleton "10_xrandr_brightness" /* bash */ ''
               ${lib.getExe pkgs.xorg.xrandr} --output ${device} --brightness ${toString brightness}
             '';
 
@@ -79,7 +79,7 @@
               modelName, # obtain with `ddcutil detect`
               brightness, # [0..1]
             }:
-            singleton "10_ddc_brightness" ''
+            singleton "10_ddc_brightness" /* bash */ ''
               ${lib.getExe pkgs.ddcutil} --model ${modelName} setvcp 10 ${
                 toString (builtins.floor (brightness * 100))
               }
@@ -90,7 +90,7 @@
               modelName, # obtain with `ddcutil detect`
               contrast, # [0..1]
             }:
-            singleton "10_ddc_contrast" ''
+            singleton "10_ddc_contrast" /* bash */ ''
               ${lib.getExe pkgs.ddcutil} --model ${modelName} setvcp 12 ${
                 toString (builtins.floor (contrast * 100))
               }