diff --git a/Makefile b/Makefile
index f2cdc9a..db376c0 100644
--- a/Makefile
+++ b/Makefile
@@ -25,10 +25,10 @@ endif
 
 default: kernel.rom
 
-kernel.com: kernel/*.asm lib/*.inc
+kernel.com: kernel/*.asm lib/*.asm
 	nasm -s -o $@ -l kernel.lst -I lib -I kernel kernel/main.asm
 
-debug.rom: debug/*.asm lib/*.inc
+debug.rom: debug/*.asm lib/*.asm
 	nasm -s -o $@ -I lib -I debug debug/main.asm && scripts/fix-rom.sh $@
 
 boot/floppy.bs: boot/fatvbr.asm