diff --git a/src/main/java/com/googlesource/gerrit/plugins/cookbook/SampleOperator.java b/src/main/java/com/googlesource/gerrit/plugins/cookbook/SampleOperator.java
index 908a934..b683e9b 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/cookbook/SampleOperator.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/cookbook/SampleOperator.java
@@ -15,17 +15,17 @@
 package com.googlesource.gerrit.plugins.cookbook;
 
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.server.query.OperatorPredicate;
 import com.google.gerrit.server.query.Predicate;
 import com.google.gerrit.server.query.QueryParseException;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gerrit.server.query.change.ChangeQueryBuilder;
+import com.google.gerrit.server.query.change.ChangeOperatorPredicate;
 import com.google.inject.Singleton;
 
 @Singleton
 public class SampleOperator
     implements ChangeQueryBuilder.ChangeOperatorFactory {
-  public static class MyPredicate extends OperatorPredicate<ChangeData> {
+  public static class MyPredicate extends ChangeOperatorPredicate {
     private final Change.Id id;
 
     MyPredicate(Change.Id id) {