diff --git a/Makefile b/Makefile
index 4b0f967a..cff9c43e 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,6 @@ PACKAGE=libjs-extjs
 
 BUILDDIR ?= $(PACKAGE)-$(DEB_VERSION_UPSTREAM)
 ORIG_SRC_TAR=$(PACKAGE)_$(DEB_VERSION_UPSTREAM).orig.tar.gz
-GITVERSION:=$(shell git rev-parse HEAD)
 
 DEB=$(PACKAGE)_$(DEB_VERSION_UPSTREAM_REVISION)_all.deb
 DSC=$(PACKAGE)_$(DEB_VERSION_UPSTREAM_REVISION).dsc
@@ -15,6 +14,7 @@ $(BUILDDIR): debian extjs
 	rm -rf $@ $@.tmp && mkdir -p $@.tmp/extjs
 	cp -a debian/ $@.tmp/debian
 	cp -a extjs/build/ $@.tmp/extjs/build
+	echo "git clone git://git.proxmox.com/git/extjs.git\\ngit checkout $$(git rev-parse HEAD)" > $@.tmp/debian/SOURCE
 	mv $@.tmp $@
 
 .PHONY: deb