diff --git a/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfCollector.java b/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfCollector.java
index 90eb9d7..8683f3f 100644
--- a/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfCollector.java
+++ b/apps/test/intent-perf/src/main/java/org/onosproject/intentperf/IntentPerfCollector.java
@@ -65,7 +65,7 @@
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected ClusterService clusterService;
 
-    @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected IntentPerfUi ui;
 
     // Auxiliary structures used to accrue data for normalized time interval
@@ -99,6 +99,7 @@
             nodeToIndex.put(nodes[i].id(), i);
         }
 
+        ui.setHeaders(getSampleHeaders());
         clearSamples();
         log.info("Started");
     }