diff --git a/tests/e2e/scenarios/keypair-rotation/run-test.sh b/tests/e2e/scenarios/keypair-rotation/run-test.sh
index 51a3af899f..7afa7e33b4 100755
--- a/tests/e2e/scenarios/keypair-rotation/run-test.sh
+++ b/tests/e2e/scenarios/keypair-rotation/run-test.sh
@@ -44,7 +44,7 @@ KUBECFG_PROMOTE=$(mktemp -t kubeconfig.XXXXXXXXX)
 ${KOPS} export kubecfg --admin --kubeconfig="${KUBECFG_PROMOTE}"
 kubectl --kubeconfig="${KUBECFG_PROMOTE}" config view > "${REPORT_DIR}/promote.kubeconfig"
 
-CA=$(kubectl --kubeconfig="${KUBECFG_PROMOTE}" config view --raw -o jsonpath="{.clusters[0].cluster.certificate-authority-data}" | base64 -D)
+CA=$(kubectl --kubeconfig="${KUBECFG_PROMOTE}" config view --raw -o jsonpath="{.clusters[0].cluster.certificate-authority-data}" | base64 --decode)
 if [ "$(echo "${CA}" | grep -c "BEGIN CERTIFICATE")" != "1" ]; then
   >&2 echo unexpected number of CA certificates in kubeconfig
   exit 1