diff --git a/.github/multi-node-log-check.sh b/.github/multi-node-log-check.sh
index f55c850e..5fd97037 100755
--- a/.github/multi-node-log-check.sh
+++ b/.github/multi-node-log-check.sh
@@ -1,4 +1,4 @@
-log1=$(docker exec multi-node_wazuh.master_1 sh -c 'cat /var/ossec/logs/ossec.log | grep -E "ERR||WARN||CRIT"')
+log1=$(docker exec multi-node_wazuh.master_1 sh -c 'cat /var/ossec/logs/ossec.log' | grep -P "ERR|WARN|CRIT")
 if [[ -z "$log1" ]]; then
  echo "No errors in master ossec.log"
 else
@@ -6,7 +6,7 @@ else
  echo "${log1}"
  exit 1
 fi
-log2=$(docker exec multi-node_wazuh.worker_1 sh -c 'cat /var/ossec/logs/ossec.log | grep -E "ERR||WARN||CRIT"')
+log2=$(docker exec multi-node_wazuh.worker_1 sh -c 'cat /var/ossec/logs/ossec.log' | grep -P "ERR|WARN|CRIT")
 if [[ -z "${log2}" ]]; then
  echo "No errors in worker ossec.log"
 else