diff --git a/usage/src/test/java/com/ning/billing/usage/timeline/categories/TestCategoryAndMetrics.java b/usage/src/test/java/com/ning/billing/usage/timeline/categories/TestCategoryAndMetrics.java
index 1dc1a56..97ec227 100644
--- a/usage/src/test/java/com/ning/billing/usage/timeline/categories/TestCategoryAndMetrics.java
+++ b/usage/src/test/java/com/ning/billing/usage/timeline/categories/TestCategoryAndMetrics.java
@@ -33,7 +33,7 @@ public class TestCategoryAndMetrics {
final ObjectMapper mapper = new ObjectMapper();
final String json = mapper.writeValueAsString(kinds);
- Assert.assertEquals("{\"eventCategory\":\"JVM\",\"sampleKinds\":[\"GC\",\"CPU\"]}", json);
+ Assert.assertEquals("{\"eventCategory\":\"JVM\",\"metrics\":[\"GC\",\"CPU\"]}", json);
final CategoryAndMetrics kindsFromJson = mapper.readValue(json, CategoryAndMetrics.class);
Assert.assertEquals(kindsFromJson, kinds);