diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/RefsModel.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/RefsModel.java
index 552b7bcdd9ca..475759cef9b5 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/RefsModel.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/RefsModel.java
@@ -105,7 +105,7 @@ public class RefsModel implements VcsLogRefs {
       @Override
       public Iterator<VcsRef> iterator() {
         List<Iterator<VcsRef>> iterators = myRefs.values().stream().map(Set::iterator).collect(Collectors.toList());
-        return Iterators.concat(iterators.toArray(new Iterator[iterators.size()]));
+        return Iterators.concat(iterators.iterator());
       }
 
       @Override