diff --git a/src/specificClass.js b/src/specificClass.js
index 19240a2..36ce54e 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -130,7 +130,7 @@ class Reactor {
     const eventName = `${measurementType}.measured.${position}`;
 
     // Register event listener for measurement updates
-    this.measurements.emitter.on(eventName, (eventData) => {
+    measurement.measurements.emitter.on(eventName, (eventData) => {
       this.logger.debug(`${position} ${measurementType} from ${eventData.childName}: ${eventData.value} ${eventData.unit}`);
 
       // Store directly in parent's measurement container