diff --git a/nifi-nar-bundles/nifi-prometheus-bundle/nifi-prometheus-reporting-task/src/main/java/org/apache/nifi/reporting/prometheus/api/PrometheusMetricsUtil.java b/nifi-nar-bundles/nifi-prometheus-bundle/nifi-prometheus-reporting-task/src/main/java/org/apache/nifi/reporting/prometheus/api/PrometheusMetricsUtil.java
index 14372394a7..91a54a0721 100644
--- a/nifi-nar-bundles/nifi-prometheus-bundle/nifi-prometheus-reporting-task/src/main/java/org/apache/nifi/reporting/prometheus/api/PrometheusMetricsUtil.java
+++ b/nifi-nar-bundles/nifi-prometheus-bundle/nifi-prometheus-reporting-task/src/main/java/org/apache/nifi/reporting/prometheus/api/PrometheusMetricsUtil.java
@@ -480,7 +480,7 @@ public class PrometheusMetricsUtil {
                 final String parentId = portStatus.getGroupId();
                 final String portComponentType = "OutputPort";
                 AMOUNT_FLOWFILES_SENT.labels(instanceId, portComponentType, portComponentName, portComponentId, parentId).set(portStatus.getFlowFilesSent());
-                AMOUNT_FLOWFILES_RECEIVED.labels(instanceId, portComponentType, portComponentName, portComponentId).set(portStatus.getFlowFilesReceived());
+                AMOUNT_FLOWFILES_RECEIVED.labels(instanceId, portComponentType, portComponentName, portComponentId, parentId).set(portStatus.getFlowFilesReceived());
 
                 AMOUNT_BYTES_SENT.labels(instanceId, portComponentType, portComponentName, portComponentId, parentId).set(portStatus.getBytesSent());
                 AMOUNT_BYTES_READ.labels(instanceId, portComponentType, portComponentName, portComponentId, parentId).set(portStatus.getInputBytes());