diff --git a/cluster/common.sh b/cluster/common.sh
index 745b3fae94..5dfb4f9e24 100755
--- a/cluster/common.sh
+++ b/cluster/common.sh
@@ -337,8 +337,8 @@ function find-release-tars() {
 
   # This tarball is only used by Ubuntu Trusty.
   KUBE_MANIFESTS_TAR=
-  if [[ "${OS_DISTRIBUTION}" == "trusty" ]]; then
-    KUBE_MANIFESTS_TAR="${KUBE_ROOT}/server/kuernetes-manifests.tar.gz"
+  if [[ "${KUBE_OS_DISTRIBUTION}" == "trusty" ]]; then
+    KUBE_MANIFESTS_TAR="${KUBE_ROOT}/server/kubernetes-manifests.tar.gz"
     if [[ ! -f "${KUBE_MANIFESTS_TAR}" ]]; then
       KUBE_MANIFESTS_TAR="${KUBE_ROOT}/_output/release-tars/kubernetes-manifests.tar.gz"
     fi