diff --git a/Makefile b/Makefile
index 8681562..9d89fbc 100644
--- a/Makefile
+++ b/Makefile
@@ -122,7 +122,7 @@ musl-git-%:
 %: $(SOURCES)/%.tar.xz | $(SOURCES)/config.sub
 	rm -rf $@.tmp
 	mkdir $@.tmp
-	( cd $@.tmp && tar Jxvf - ) < $<
+	( cd $@.tmp && xz -d | tar xvf - ) < $<
 	test ! -d patches/$@ || cat patches/$@/* | ( cd $@.tmp/$@ && patch -p1 )
 	test ! -f $@.tmp/$@/config.sub || cp -f $(SOURCES)/config.sub $@.tmp/$@
 	rm -rf $@
diff --git a/hashes/linux-2.6.16.tar.xz.sha1 b/hashes/linux-2.6.16.tar.xz.sha1
new file mode 100644
index 0000000..d0834a7
--- /dev/null
+++ b/hashes/linux-2.6.16.tar.xz.sha1
@@ -0,0 +1 @@
+fbd472a2d196b9ec9adcd9b861f517c544959585  linux-2.6.16.tar.xz