diff --git a/build.sh b/build.sh
index 891dda162d..50753647ec 100755
--- a/build.sh
+++ b/build.sh
@@ -40,7 +40,7 @@ configure_yum_repos() {
 
 install_rpms() {
     local builddeps
-    local frozendeps
+    local frozendeps=""
 
     # freeze grub2 for https://github.com/coreos/fedora-coreos-tracker/issues/1886
     case "${arch}" in