diff --git a/server/storage/mvcc/kvstore_compaction.go b/server/storage/mvcc/kvstore_compaction.go
index 45409114e39..f9c9b19aa4d 100644
--- a/server/storage/mvcc/kvstore_compaction.go
+++ b/server/storage/mvcc/kvstore_compaction.go
@@ -72,6 +72,7 @@ func (s *store) scheduleCompaction(compactMainRev, prevCompactRev int64) (KeyVal
 				"finished scheduled compaction",
 				zap.Int64("compact-revision", compactMainRev),
 				zap.Duration("took", time.Since(totalStart)),
+				zap.Int("number-of-keys-compacted", keyCompactions),
 				zap.Uint32("hash", hash.Hash),
 				zap.Int64("current-db-size-bytes", size),
 				zap.String("current-db-size", humanize.Bytes(uint64(size))),