diff --git a/integrationtest/backend/elasticsearch/src/test/java/org/hibernate/search/integrationtest/backend/elasticsearch/tmp/ElasticsearchMetricAggregationsIT.java b/integrationtest/backend/elasticsearch/src/test/java/org/hibernate/search/integrationtest/backend/elasticsearch/tmp/ElasticsearchMetricAggregationsIT.java
index ee2b6f74a92..096de3e2b4b 100644
--- a/integrationtest/backend/elasticsearch/src/test/java/org/hibernate/search/integrationtest/backend/elasticsearch/tmp/ElasticsearchMetricAggregationsIT.java
+++ b/integrationtest/backend/elasticsearch/src/test/java/org/hibernate/search/integrationtest/backend/elasticsearch/tmp/ElasticsearchMetricAggregationsIT.java
@@ -38,7 +38,7 @@ public class ElasticsearchMetricAggregationsIT {
 	private final AggregationKey<Long> countConverted = AggregationKey.of( "countConverted" );
 	private final AggregationKey<Long> countDistinctIntegers = AggregationKey.of( "countDistinctIntegers" );
 	private final AggregationKey<Long> countDistinctConverted = AggregationKey.of( "countDistinctConverted" );
-	private final AggregationKey<Integer> avgIntegers = AggregationKey.of( "avgIntegers" );
+	private final AggregationKey<Double> avgIntegers = AggregationKey.of( "avgIntegers" );
 	private final AggregationKey<String> avgConverted = AggregationKey.of( "avgConverted" );
 
 	@BeforeEach
@@ -62,7 +62,7 @@ public void test_filteringResults() {
 				.aggregation( countConverted, f -> f.count().field( "converted" ) )
 				.aggregation( countDistinctIntegers, f -> f.countDistinct().field( "integer" ) )
 				.aggregation( countDistinctConverted, f -> f.countDistinct().field( "converted" ) )
-				.aggregation( avgIntegers, f -> f.avg().field( "integer", Integer.class ) )
+				.aggregation( avgIntegers, f -> f.avg().field( "integer", Double.class ) )
 				.aggregation( avgConverted, f -> f.avg().field( "converted", String.class ) )
 				.toQuery();
 
@@ -96,7 +96,7 @@ public void test_allResults() {
 				.aggregation( countConverted, f -> f.count().field( "converted" ) )
 				.aggregation( countDistinctIntegers, f -> f.countDistinct().field( "integer" ) )
 				.aggregation( countDistinctConverted, f -> f.countDistinct().field( "converted" ) )
-				.aggregation( avgIntegers, f -> f.avg().field( "integer", Integer.class ) )
+				.aggregation( avgIntegers, f -> f.avg().field( "integer", Double.class ) )
 				.aggregation( avgConverted, f -> f.avg().field( "converted", String.class ) )
 				.toQuery();