Track the max disk size used by a single Searchable component.

1 files changed, 1 insertions, 1 deletions

diff --git a/searchcorespi/src/vespa/searchcorespi/index/indexcollection.cpp b/searchcorespi/src/vespa/searchcorespi/index/indexcollection.cpp
index 12128a3df18..031cf0178d8 100644
--- a/searchcorespi/src/vespa/searchcorespi/index/indexcollection.cpp
+++ b/searchcorespi/src/vespa/searchcorespi/index/indexcollection.cpp
@@ -113,7 +113,7 @@ IndexCollection::getSearchableStats() const
 {
     search::SearchableStats stats;
     for (size_t i = 0; i < _sources.size(); ++i) {
-        stats.add(_sources[i].source_wrapper->getSearchableStats());
+        stats.merge(_sources[i].source_wrapper->getSearchableStats());
     }
     return stats;
 }