diff --git a/server/monitor-types/snmp.js b/server/monitor-types/snmp.js
index c176e55f..a1760fa3 100644
--- a/server/monitor-types/snmp.js
+++ b/server/monitor-types/snmp.js
@@ -46,9 +46,9 @@ class SNMPMonitorType extends MonitorType {
 
             if (status) {
                 heartbeat.status = UP;
-                heartbeat.msg = `JSON query passes (comparing ${response} ${this.jsonPathOperator} ${this.expectedValue})`;
+                heartbeat.msg = `JSON query passes (comparing ${response} ${monitor.jsonPathOperator} ${monitor.expectedValue})`;
             } else {
-                throw new Error(`JSON query does not pass (comparing ${response} ${this.jsonPathOperator} ${this.expectedValue})`);
+                throw new Error(`JSON query does not pass (comparing ${response} ${monitor.jsonPathOperator} ${monitor.expectedValue})`);
             }
         } finally {
             if (session) {