diff --git a/elasticsearch/x-pack/watcher/src/test/java/org/elasticsearch/watcher/actions/pagerduty/PagerDutyActionTests.java b/elasticsearch/x-pack/watcher/src/test/java/org/elasticsearch/watcher/actions/pagerduty/PagerDutyActionTests.java
index 51cd7a4c04c..0010c90303b 100644
--- a/elasticsearch/x-pack/watcher/src/test/java/org/elasticsearch/watcher/actions/pagerduty/PagerDutyActionTests.java
+++ b/elasticsearch/x-pack/watcher/src/test/java/org/elasticsearch/watcher/actions/pagerduty/PagerDutyActionTests.java
@@ -158,7 +158,7 @@ public class PagerDutyActionTests extends ESTestCase {
         TextTemplate eventType = null;
         if (randomBoolean()) {
             eventType = TextTemplate.inline(randomFrom("trigger", "resolve", "acknowledge")).build();
-            builder.field("eventType", eventType);
+            builder.field("event_type", eventType);
         }
 
         Boolean attachPayload = randomBoolean() ? null : randomBoolean();