diff --git a/core/src/test/java/org/elasticsearch/index/query/AbstractQueryTestCase.java b/core/src/test/java/org/elasticsearch/index/query/AbstractQueryTestCase.java
index 93ac3b125c6..5837d5b16ff 100644
--- a/core/src/test/java/org/elasticsearch/index/query/AbstractQueryTestCase.java
+++ b/core/src/test/java/org/elasticsearch/index/query/AbstractQueryTestCase.java
@@ -435,7 +435,9 @@ public abstract class AbstractQueryTestCase<QB extends AbstractQueryBuilder<QB>>
      * Allows to override boost assertions for queries that don't have the default behaviour
      */
     protected void assertBoost(QB queryBuilder, Query query) throws IOException {
-        assertThat(query.getBoost(), equalTo(queryBuilder.boost()));
+        // workaround https://bugs.openjdk.java.net/browse/JDK-8056984
+        float boost = queryBuilder.boost();
+        assertThat(query.getBoost(), equalTo(boost));
     }
 
     /**