diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index 057c893..132a28e 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -17,7 +17,7 @@ build() {
 
   rm -f intel-ucode{,-with-caveats}/list
   mkdir -p kernel/x86/microcode
-  iucode_tool -w kernel/x86/microcode/GenuineIntel.bin intel-ucode{,-with-caveats}/
+  iucode_tool --write-earlyfw=kernel/x86/microcode/GenuineIntel.bin intel-ucode{,-with-caveats}/
   # Make intel-ucode.img reproducible
   [ ! -z $SOURCE_DATE_EPOCH ] && touch -d @$SOURCE_DATE_EPOCH kernel/x86/microcode/GenuineIntel.bin
   echo kernel/x86/microcode/GenuineIntel.bin | bsdcpio -o -H newc -R 0:0 > intel-ucode.img