diff --git a/src/test/java/org/opensearch/performanceanalyzer/listener/RTFPerformanceAnalyzerSearchListenerTests.java b/src/test/java/org/opensearch/performanceanalyzer/listener/RTFPerformanceAnalyzerSearchListenerTests.java
index 9629abb2..0c19492a 100644
--- a/src/test/java/org/opensearch/performanceanalyzer/listener/RTFPerformanceAnalyzerSearchListenerTests.java
+++ b/src/test/java/org/opensearch/performanceanalyzer/listener/RTFPerformanceAnalyzerSearchListenerTests.java
@@ -60,13 +60,13 @@ public void init() {
         Mockito.when(controller.isPerformanceAnalyzerEnabled()).thenReturn(true);
         Mockito.when(
                         metricsRegistry.createHistogram(
-                                Mockito.eq("CPU_Utilization"),
+                                Mockito.eq("cpu_utilization"),
                                 Mockito.anyString(),
                                 Mockito.eq("rate")))
                 .thenReturn(cpuUtilizationHistogram);
         Mockito.when(
                         metricsRegistry.createHistogram(
-                                Mockito.eq("heap_used"), Mockito.anyString(), Mockito.eq("B")))
+                                Mockito.eq("heap_allocated"), Mockito.anyString(), Mockito.eq("B")))
                 .thenReturn(heapUsedHistogram);
         searchListener = new RTFPerformanceAnalyzerSearchListener(controller);
         assertEquals(