diff --git a/solr/core/src/java/org/apache/solr/search/facet/SweepCountAware.java b/solr/core/src/java/org/apache/solr/search/facet/SweepCountAware.java
index 3dd83767020..bfc583f009f 100644
--- a/solr/core/src/java/org/apache/solr/search/facet/SweepCountAware.java
+++ b/solr/core/src/java/org/apache/solr/search/facet/SweepCountAware.java
@@ -61,8 +61,8 @@ interface SweepCountAware {
    * union of doc domains:
    * 
    * First, the driver passes this object as the param to {@link SweepCountAware#registerCounts(SegCounter)}, which
-   * calls {@link #map(int, int)} on "this" to map the static "allIdx" (allIdx < n) for each active backing domain to
-   * a transient "activeIdx" for counts corresponding to active domains (activeIdx < count(allIdx) <= n). (The return value
+   * calls {@link #map(int, int)} on "this" to map the static "allIdx" (allIdx &lt; n) for each active backing domain to
+   * a transient "activeIdx" for counts corresponding to active domains (activeIdx &lt; count(allIdx) &lt;= n). (The return value
    * of {@link SweepCountAware#registerCounts(SegCounter)} indicates to the "driver" the max "active counts" index (for
    * domains that contain the current doc).
    * 
diff --git a/solr/core/src/java/org/apache/solr/search/facet/SweepDISI.java b/solr/core/src/java/org/apache/solr/search/facet/SweepDISI.java
index 94c4261e197..c083c5db0ec 100644
--- a/solr/core/src/java/org/apache/solr/search/facet/SweepDISI.java
+++ b/solr/core/src/java/org/apache/solr/search/facet/SweepDISI.java
@@ -25,7 +25,7 @@ import org.apache.lucene.search.DocIdSetIterator;
 import org.apache.solr.search.facet.SlotAcc.CountSlotAcc;
 import org.apache.solr.search.facet.SlotAcc.SweepCountAccStruct;
 
-public abstract class SweepDISI extends DocIdSetIterator implements SweepCountAware {
+abstract class SweepDISI extends DocIdSetIterator implements SweepCountAware {
 
   public final int size;
   final CountSlotAcc[] countAccs;