diff --git a/Makefile b/Makefile
index 0431316..99f2b2a 100644
--- a/Makefile
+++ b/Makefile
@@ -29,8 +29,7 @@ sdist: $(TARBALL)
 $(TARBALL):
 	mkdir -p $$(dirname $(TARBALL))
 	$(RM) $(TARBALL)
-	cp $(SOURCES) $(DISTDIR)
-	tar caf $(TARBALL) $(DISTDIR)
+	tar caf $(TARBALL) $(SOURCES) $(DISTDIR)
 
 distclean:
 	$(RM) -r $$(dirname $(TARBALL)) src/
--
libgit2 0.21.2