diff --git a/Makefile b/Makefile
index 7c5d87de..2bcdf335 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ run: $(iso)
 
 iso: $(iso)
 
-$(iso): $(kernel)
+$(iso): $(kernel) $(grub_cfg)
 	@mkdir -p build/isofiles/boot/grub
 	@cp $(kernel) build/isofiles/boot/
 	@cp $(grub_cfg) build/isofiles/boot/grub