diff --git a/Makefile b/Makefile
index 79aec12..3be925f 100644
--- a/Makefile
+++ b/Makefile
@@ -4,9 +4,19 @@ LD=x86_64-elf-ld
 run: mbr.bin
 	qemu-system-i386 -drive format=raw,file=$<
 
+debug: mbr.bin
+	qemu-system-i386 -drive format=raw,file=$< -s -S &
+	i386-elf-gdb \
+		-ex "target remote localhost:1234" \
+		-ex "set architecture i8086" \
+		-ex "break *0x7c00" \
+		-ex "continue"
+
 %.o: %.S
 	$(AS) $^ -o $@
 
 mbr.bin: mbr.o
 	$(LD) -Ttext=0x7c00 --oformat=binary $^ -o $@
 
+clean:
+	rm *.bin *.o
diff --git a/mbr.S b/mbr.S
index 4aceb13..419ec05 100644
--- a/mbr.S
+++ b/mbr.S
@@ -1,6 +1,6 @@
     .code16
     .global _start
-_start:                   #точка входа
+_start:
     mov $banner, %si
     call print_string