diff --git a/tests/02a-checkrun.sh b/tests/02a-checkrun.sh
index 24025ee4..96c202bb 100755
--- a/tests/02a-checkrun.sh
+++ b/tests/02a-checkrun.sh
@@ -63,10 +63,10 @@ echo -e "   ___ ____                      _               _\n  / _ \___ \ __ _
 check_run_ok "ansible-deployer show --debug" "\[DEBUG\]: load_configuration called"
 
 # Check different output options
-check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra" "\[ERROR\]:\n TASK \[Run ll\]"
-check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --debug" "\[DEBUG\]:\n TASK \[Run ll\]"
-check_message_not_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --raw-runner-output" "\[ERROR\]:\n TASK \[Run ll\]"
-check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --raw-runner-output --debug" "\[DEBUG\]:\n TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra" "\[ERROR\]:.*\n.* TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --debug" "\[DEBUG\]:.*\n.* TASK \[Run ll\]"
+check_message_not_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --raw-runner-output" "\[ERROR\]:.*\n.* TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run --task task_with_ansible_fail --stage testing --infrastructure testInfra --raw-runner-output --debug" "\[DEBUG\]:.*\n.* TASK \[Run ll\]"
 
 echo -e "   ___ ____                      _               _\n  / _ \___ \ __ _            ___| |__   ___  ___| | ___ __ _   _ _ __\n | | | |__) / _\` |  _____   / __| '_ \ / _ \/ __| |/ / '__| | | | '_ \ \n | |_| / __/ (_| | |_____| | (__| | | |  __/ (__|   <| |  | |_| | | | |\n  \___/_____\__,_|          \___|_| |_|\___|\___|_|\_\_|   \__,_|_| |_|\n \n  _ _           _ _                 _   _\n | (_)_ __ ___ (_) |_    ___  _ __ | |_(_) ___  _ __\n | | | '_ \` _ \| | __|  / _ \| '_ \| __| |/ _ \| '_ \ \n | | | | | | | | | |_  | (_) | |_) | |_| | (_) | | | |\n |_|_|_| |_| |_|_|\__|  \___/| .__/ \__|_|\___/|_| |_|\n                             |_|\n"
 # Check --limit option
diff --git a/tests/02a-checkrun_short.sh b/tests/02a-checkrun_short.sh
index 17eead1f..f54c0b42 100755
--- a/tests/02a-checkrun_short.sh
+++ b/tests/02a-checkrun_short.sh
@@ -62,10 +62,10 @@ echo -e "   ___ ____                      _               _
 check_run_ok "ansible-deployer show -d" "\[DEBUG\]: load_configuration called"
 
 # Check different output options
-check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra" "\[ERROR\]:\n TASK \[Run ll\]"
-check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra -d" "\[DEBUG\]:\n TASK \[Run ll\]"
-check_message_not_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra --raw-runner-output" "\[ERROR\]:\n TASK \[Run ll\]"
-check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra --raw-runner-output -d" "\[DEBUG\]:\n TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra" "\[ERROR\]:.*\n.* TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra -d" "\[DEBUG\]:.*\n.* TASK \[Run ll\]"
+check_message_not_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra --raw-runner-output" "\[ERROR\]:.*\n.* TASK \[Run ll\]"
+check_message_in_output "ansible-deployer run -t task_with_ansible_fail -s testing -i testInfra --raw-runner-output -d" "\[DEBUG\]:.*\n.* TASK \[Run ll\]"
 
 echo -e "   ___ ____                      _               _                           _                _\n  / _ \___ \ __ _            ___| |__   ___  ___| | ___ __ _   _ _ __    ___| |__   ___  _ __| |_\n | | | |__) / _\` |  _____   / __| '_ \ / _ \/ __| |/ / '__| | | | '_ \  / __| '_ \ / _ \| '__| __|\n | |_| / __/ (_| | |_____| | (__| | | |  __/ (__|   <| |  | |_| | | | | \__ \ | | | (_) | |  | |_\n  \___/_____\__,_|          \___|_| |_|\___|\___|_|\_\_|   \__,_|_| |_| |___/_| |_|\___/|_|   \__|\n \n  _ _           _ _                 _   _\n | (_)_ __ ___ (_) |_    ___  _ __ | |_(_) ___  _ __\n | | | '_ \` _ \| | __|  / _ \| '_ \| __| |/ _ \| '_ \ \n | | | | | | | | | |_  | (_) | |_) | |_| | (_) | | | |\n |_|_|_| |_| |_|_|\__|  \___/| .__/ \__|_|\___/|_| |_|\n                             |_|\n"
 # Check --limit option
diff --git a/tests/testing_lib.sh b/tests/testing_lib.sh
index 2c8a7fe7..4fa7f6b9 100644
--- a/tests/testing_lib.sh
+++ b/tests/testing_lib.sh
@@ -19,7 +19,7 @@ check_message_in_output() {
         CMD=$1
         EXPTEXT=$2
         echo "Check: $CMD"
-        eval "$CMD |& grep '$EXPTEXT'"
+        eval "$CMD |& grep -zP '$EXPTEXT'"
         if [ $? -eq 0 ]
         then
                 echo "OK: '${CMD}' returned '${EXPTEXT}'"
@@ -35,7 +35,7 @@ check_message_not_in_output() {
         CMD=$1
         EXPTEXT=$2
         echo "Check: $CMD"
-        eval "$CMD |& grep '$EXPTEXT'"
+        eval "$CMD |& grep -zP '$EXPTEXT'"
         if [ $? -eq 0 ]
         then
                 echo "FAILED: '${CMD}' returned '${EXPTEXT}'"