Index: boot/arch/ia32/Makefile.inc
===================================================================
--- boot/arch/ia32/Makefile.inc	(revision 9a1b20c34d5404b8272209d06c0239aa1a2384da)
+++ boot/arch/ia32/Makefile.inc	(revision 95b730c2989ef950189f5439eebbd7fcc3dc2dc8)
@@ -80,5 +80,5 @@
 endif
 ifeq ($(RDFMT),fat)
-	$(BASE)/tools/mkfat.sh $(USPACEDIR)/dist/ arch/$(ARCH)/iso/boot/initrd.fs
+	$(BASE)/tools/mkfat.py $(USPACEDIR)/dist/ arch/$(ARCH)/iso/boot/initrd.fs
 endif
 	$(BASE)/tools/mkhord.py 4096 arch/$(ARCH)/iso/boot/initrd.fs arch/$(ARCH)/iso/boot/initrd.img