diff --git a/solr/src/java/org/apache/solr/search/Grouping.java b/solr/src/java/org/apache/solr/search/Grouping.java
index 9d75350108b..224afddae25 100755
--- a/solr/src/java/org/apache/solr/search/Grouping.java
+++ b/solr/src/java/org/apache/solr/search/Grouping.java
@@ -715,10 +715,9 @@ class TopGroupSortCollector extends TopGroupCollector {
       groupMap.put(smallest.groupValue, smallest);
       orderedGroups.add(smallest);
 
+      int lastSlot = orderedGroups.last().comparatorSlot;
       for (FieldComparator fc : comparators)
-        fc.setBottom(orderedGroups.last().comparatorSlot);
-      for (FieldComparator fc : smallest.sortGroupComparators)
-        fc.setBottom(0);
+        fc.setBottom(lastSlot);
 
       return;
     }