diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 0ddf6c077ca..f6f54819d43 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -256,6 +256,9 @@ Other Changes
 * SOLR-10438: Assign explicit useDocValuesAsStored values to all points field types in 
   schema-point.xml/TestPointFields. (hossman, Steve Rowe)
 
+* SOLR-10659: Remove ResponseBuilder.getSortSpec use in SearchGroupShardResponseProcessor.
+  (Judith Silverman via Christine Poerschke)
+
 ==================  6.6.0 ==================
 
 Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this release.
diff --git a/solr/core/src/java/org/apache/solr/search/grouping/distributed/responseprocessor/SearchGroupShardResponseProcessor.java b/solr/core/src/java/org/apache/solr/search/grouping/distributed/responseprocessor/SearchGroupShardResponseProcessor.java
index ab13f7244b5..18896e08cff 100644
--- a/solr/core/src/java/org/apache/solr/search/grouping/distributed/responseprocessor/SearchGroupShardResponseProcessor.java
+++ b/solr/core/src/java/org/apache/solr/search/grouping/distributed/responseprocessor/SearchGroupShardResponseProcessor.java
@@ -52,7 +52,7 @@ public class SearchGroupShardResponseProcessor implements ShardResponseProcessor
    */
   @Override
   public void process(ResponseBuilder rb, ShardRequest shardRequest) {
-    SortSpec ss = rb.getSortSpec();
+    SortSpec groupSortSpec = rb.getGroupingSpec().getGroupSortSpec();
     Sort groupSort = rb.getGroupingSpec().getGroupSort();
     final String[] fields = rb.getGroupingSpec().getFields();
     Sort withinGroupSort = rb.getGroupingSpec().getSortWithinGroup();
@@ -144,7 +144,7 @@ public class SearchGroupShardResponseProcessor implements ShardResponseProcessor
     rb.firstPhaseElapsedTime = maxElapsedTime;
     for (String groupField : commandSearchGroups.keySet()) {
       List<Collection<SearchGroup<BytesRef>>> topGroups = commandSearchGroups.get(groupField);
-      Collection<SearchGroup<BytesRef>> mergedTopGroups = SearchGroup.merge(topGroups, ss.getOffset(), ss.getCount(), groupSort);
+      Collection<SearchGroup<BytesRef>> mergedTopGroups = SearchGroup.merge(topGroups, groupSortSpec.getOffset(), groupSortSpec.getCount(), groupSort);
       if (mergedTopGroups == null) {
         continue;
       }