diff --git a/Makefile b/Makefile
index 8475391..bd3cfeb 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@
 	gcc -c head.S
 
 clean:
-	rm -rf *.o *.bin *.elf
+	rm -rf *.o *.bin *.elf *.bz2 *.rpm
 
 source:bootstub.c head.S VERSION
 	git-archive --prefix=bootstub-`head -n 1 VERSION | awk '{print $$1}'`/ --format=tar HEAD | bzip2 -c > bootstub-`head -n 1 VERSION | awk '{print $$1}'`.tar.bz2
diff --git a/bootstub.spec b/bootstub.spec
index 7fc9531..5d5f637 100644
--- a/bootstub.spec
+++ b/bootstub.spec
@@ -6,7 +6,6 @@
 Group: System Environment/Shells
 Source: %{name}-%{version}.tar.bz2
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)  
-Requires: make gcc awk dd ld bzip2
 
 %description 
 this package provides bootstub to create NAND boot image