diff --git a/nix/configurations/vanadium/nixos/display.nix b/nix/configurations/vanadium/nixos/display.nix
index b309b82f..0de06ce0 100644
--- a/nix/configurations/vanadium/nixos/display.nix
+++ b/nix/configurations/vanadium/nixos/display.nix
@@ -51,7 +51,7 @@
 
       switches = {
         setDPI = {dpi}:
-          singleton "10_xrdb-dpi" "xrdb -merge ${pkgs.writeText "xrdb-dpi-config" ''
+          singleton "10_xrdb-dpi" "${lib.getExe pkgs.xorg.xrdb} -merge ${pkgs.writeText "xrdb-dpi-config" ''
             Xcursor.size: 64
             Xft.dpi:   ${toString dpi}
           ''}";
@@ -66,7 +66,7 @@
         # For that reason, we can't base our delay on its output, sadly.
           singleton "10_xrandr_brightness" ''
             sleep 10
-            xrandr --output ${device} --brightness ${toString brightness}
+            ${lib.getExe pkgs.xorg.xrandr} --output ${device} --brightness ${toString brightness}
           '';
 
         # Is scoped to an output device, no need to be called on built-in display
@@ -75,7 +75,7 @@
           brightness, # [0..1]
         }:
           singleton "10_ddc_brightness" ''
-            ddcutil --model ${modelName} setvcp 10 ${toString (builtins.floor (brightness * 100))}
+            ${lib.getExe pkgs.ddcutil} --model ${modelName} setvcp 10 ${toString (builtins.floor (brightness * 100))}
           '';
 
         setDDCContrast = {
@@ -83,7 +83,7 @@
           contrast, # [0..1]
         }:
           singleton "10_ddc_contrast" ''
-            ddcutil --model ${modelName} setvcp 12 ${toString (builtins.floor (contrast * 100))}
+            ${lib.getExe pkgs.ddcutil} --model ${modelName} setvcp 12 ${toString (builtins.floor (contrast * 100))}
           '';
       };