diff --git a/Makefile b/Makefile
index a3e3285..22248d9 100644
--- a/Makefile
+++ b/Makefile
@@ -92,6 +92,7 @@ RPMS = rpm/noarch/qubes-logos-$(QBSLOGOS_VERSION)-*.rpm \
 
 update-repo:
 	ln -f $(RPMS) yum/installer/rpm/
+	export NO_SIGN
 	(cd yum && ./update_repo.sh)
 
 iso:
diff --git a/yum/update_repo.sh b/yum/update_repo.sh
index aa67ca2..fdf27ed 100755
--- a/yum/update_repo.sh
+++ b/yum/update_repo.sh
@@ -24,6 +24,9 @@ update_repo()
 for repo in dom0-updates installer qubes-dom0 ; do
     echo "--> Processing repo: $repo..."
     check_repo $repo/rpm -o $repo/repodata || continue
+    if [ x$NO_SIGN != x"1" ]; then
+        check_repo $repo/rpm -o $repo/repodata || continue
+    fi
     update_repo $repo -o $repo/repodata
 done