diff --git a/scripts/2.first_start_k8s.sh b/scripts/2.first_start_k8s.sh
index 9f8953c..9821d81 100755
--- a/scripts/2.first_start_k8s.sh
+++ b/scripts/2.first_start_k8s.sh
@@ -83,7 +83,7 @@ approve_kubelet_certificates() {
       kctl certificate approve $csrs
     fi
     ((tries--))
-    if [ "$tries" < 1 ]; then
+    if [ "$tries" -lt "1" ]; then
       pinfo "Timeout waiting for kubelet certificates creation, please investigate why all nodes are not up by now"
       break
     fi