diff --git a/overlays/linux-firmware.nix b/overlays/linux-firmware.nix
index 7020eda..f2815fb 100644
--- a/overlays/linux-firmware.nix
+++ b/overlays/linux-firmware.nix
@@ -1,7 +1,7 @@
 self: super: {
   linux-firmware = super.linux-firmware.overrideAttrs(o: {
-    postInstall = ''
-    ls -al
+    installPhase = ''
+      ls -al
       cd cirrus
       ln -s cs35l41-dsp1-spk-cali-10431e12-spkid0-l0.bin.xz cs35l41-dsp1-spk-cali-10431683-spkid0-l0.bin.xz
       ln -s cs35l41-dsp1-spk-cali-10431e12-spkid0-l0.bin.xz cs35l41-dsp1-spk-cali-10431683-spkid0-r0.bin.xz