diff --git a/raspberry-pi/4/apply-overlays-dtmerge.nix b/raspberry-pi/4/apply-overlays-dtmerge.nix
index c890e5a..4e4bc7b 100644
--- a/raspberry-pi/4/apply-overlays-dtmerge.nix
+++ b/raspberry-pi/4/apply-overlays-dtmerge.nix
@@ -21,7 +21,7 @@ with lib; (base: overlays': stdenvNoCC.mkDerivation {
         echo "Applying overlay ${o.name} to $( basename $dtb )"
         mv $dtb{,.in}
         cp ${o.dtboFile}{,.dtbo}
-        ${libraspberrypi}/bin/dtmerge "$dtb.in" "$dtb" ${o.dtboFile}.dtbo;
+        dtmerge "$dtb.in" "$dtb" ${o.dtboFile}.dtbo;
         rm $dtb.in ${o.dtboFile}.dtbo
       fi
       '')}