diff --git a/Makefile b/Makefile
index c04a97e..52fb500 100644
--- a/Makefile
+++ b/Makefile
@@ -27,23 +27,17 @@ MANDIR = man
 #MANDIR = share/man     # FHS-ish
 
 # You shouldn't need to change anything below this point.
-CFLAGS  += -g -Wall 
+VERSION = 0.1
+CFLAGS  += -g -Wall "-DIFTOP_VERSION=\"$(IFTOPVERSION)\""
 LDFLAGS += -g 
 LDLIBS += -lpcap -lpthread -lcurses -lm
 
-SRCS =  iftop.c \
-        addr_hash.c \
-	hash.c \
-	ns_hash.c \
-	resolver.c \
-	ui.c \
-        util.c \
-	sorted_list.c
+SRCS = iftop.c addr_hash.c hash.c ns_hash.c resolver.c ui.c util.c sorted_list.c
+HDRS = addr_hash.h hash.h iftop.h ns_hash.h resolver.h sorted_list.h ui.h
+TXTS = README INSTALL TODO iftop.8
 
 OBJS = $(SRCS:.c=.o)
 
-HDRS =  addr_hash.h	
-
 # If you do not have makedepend, you will need to remove references to depend
 # and nodepend below.
 iftop: depend $(OBJS) Makefile
@@ -62,6 +56,12 @@ uninstall:
 clean: nodepend
 	rm -f *~ *.o core iftop
 
+tarball: nodepend $(SRCS) $(HDRS) $(TXTS)
+	mkdir iftop-$(VERSION)
+	set -e ; for i in Makefile $(SRCS) $(HDRS) $(TXTS) ; do cp $$i iftop-$(VERSION)/$$i ; done
+	tar cvf - iftop-$(VERSION) | gzip --best > iftop-$(VERSION).tar.gz
+	rm -rf iftop-$(VERSION)
+
 tags :
 	etags *.c *.h