diff --git a/xymon/plugins/client/ext/maco.sh b/xymon/plugins/client/ext/maco.sh
index 6844863..f682a40 100755
--- a/xymon/plugins/client/ext/maco.sh
+++ b/xymon/plugins/client/ext/maco.sh
@@ -216,8 +216,8 @@ No Maco urgent update is planned."
 # Verify the status of last Maco update
 check_last_update_status() {
 
-	## Check if Maco status file is present
-	if [ -f "${MACO_STATUS_FILE}" ]; then
+	## Check if Maco status file is present and readable
+	if [ -r "${MACO_STATUS_FILE}" ]; then
 		debug_message "check_last_update_status − \
 Maco status file (${MACO_STATUS_FILE}) exists."
 		local_maco_status=$(grep --max-count=1 -- MacoStatus "${MACO_STATUS_FILE}" | cut --delimiter="=" --fields=2)
@@ -239,12 +239,15 @@ Maco status file (${MACO_STATUS_FILE}) exists."
 		elif [ "${local_maco_status}" = "last-update-failed" ]; then
 			echo "${RED_PIC} Last Maco update failed (MacoStatus=${local_maco_status})." >> "${PLUGIN_RESULT}"
 			echo "12${RED_PIC} Maco update failed" >> "${PLUGIN_STATE}"
+		else
+			echo "${CLEAR_PIC} Maco last update status is unknown (MacoStatus=${local_maco_status})." >> "${PLUGIN_RESULT}"
+			echo "42${CLEAR_PIC} Maco last update status is unknown" >> "${PLUGIN_STATE}"
 		fi
 	else
 		debug_message "check_last_update_status − \
 Maco status file (${MACO_STATUS_FILE}) doesn't exists."
-		…
-		echo "42${CLEAR_PIC} Maco last update status is unknow (${MACO_STATUS_FILE} doesn't exists or isn't available)." >> "${PLUGIN_STATE}"
+		echo "${CLEAR_PIC} Maco last update status is unknown (${MACO_STATUS_FILE} doesn't exists or isn't available)." >> "${PLUGIN_RESULT}"
+		echo "44${CLEAR_PIC} Maco last update status is unknown" >> "${PLUGIN_STATE}"
 	fi
 
 }