diff --git a/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificantTextAggregatorFactory.java b/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificantTextAggregatorFactory.java
index c6d134dc9a50..94579180dbbf 100644
--- a/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificantTextAggregatorFactory.java
+++ b/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificantTextAggregatorFactory.java
@@ -363,7 +363,7 @@ protected void processTokenStream(
          * Extract values from {@code _source}.
          */
         protected List<Object> extractRawValues(String field) {
-            return sourceLookup.extractRawValues(field);
+            return sourceLookup.extractRawValuesWithoutCaching(field);
         }
 
         @Override