diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/MergeOp.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/MergeOp.java
index cf8a3c4349..987a9083d2 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/MergeOp.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/MergeOp.java
@@ -509,6 +509,7 @@ public class MergeOp {
             commit.statusCode = CommitMergeStatus.ALREADY_MERGED;
             try {
               setMerged(chg, null);
+              indexer.index(chg);
             } catch (OrmException e) {
               log.error("Cannot mark change " + chg.getId() + " merged", e);
             }