diff --git a/Makefile b/Makefile
index 590a11c..5b13490 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ MKISOFS = genisoimage
 ISO = $(HOS).iso
 QEMU = qemu-system-x86_64
 
-.PHONY: kernel clean qemu
+.PHONY: kernel clean qemu iso
 
 # default target: build the kernel and ISO image
 all: kernel iso
@@ -14,6 +14,8 @@ kernel:
 	make -C kernel
 
 # build the ISO image
+iso: $(ISO)
+
 $(ISO): kernel
 	cp kernel/$(HOS) iso/boot
 	$(MKISOFS) -R -b boot/grub/stage2_eltorito -no-emul-boot \
diff --git a/kernel/Makefile b/kernel/Makefile
index 745f3b3..703e179 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -1,12 +1,14 @@
 
 KERNEL = hos
-TARGET = elf32-i386
+LOAD_ADDRESS = 0x100000
+LDTARGET = elf32-i386
+LDFLAGS = -Ttext $(LOAD_ADDRESS) --oformat $(LDTARGET)
 
 .PHONY: clean
 
 all:
 	nasm -f elf -o boot.o boot.asm
-	ld --oformat $(TARGET) -o $(KERNEL) boot.o
+	ld $(LDFLAGS) -o $(KERNEL) boot.o
 
 clean:
 	-rm -f *~ $(KERNEL) *.o