diff --git a/Makefile b/Makefile
index 8a1d063..5302c10 100644
--- a/Makefile
+++ b/Makefile
@@ -40,8 +40,13 @@ os.iso: kernel.elf
 		-o os.iso 			\
 		iso
 
+doc:
+	doxygen Doxyfile
+
+.PHONY: run clean all
+
 run: os.iso
 	qemu-system-i386 -cdrom $<  -serial stdio #-d cpu
 
 clean:
-	rm *.o kernel.elf os.iso
+	rm -r *.o kernel.elf os.iso doc