1 files changed, 3 insertions, 1 deletions
diff --git a/src/widgets/dialogs/qfilesystemmodel.cpp b/src/widgets/dialogs/qfilesystemmodel.cpp
index c4d2db95f3..fd49246e9f 100644
--- a/src/widgets/dialogs/qfilesystemmodel.cpp
+++ b/src/widgets/dialogs/qfilesystemmodel.cpp
@@ -1197,7 +1197,9 @@ void QFileSystemModel::sort(int column, Qt::SortOrder order)
     d->sortOrder = order;
 
     QModelIndexList newList;
-    for (int i = 0; i < nodeCount; ++i) {
+    const int numOldNodes = oldNodes.size();
+    newList.reserve(numOldNodes);
+    for (int i = 0; i < numOldNodes; ++i) {
         const QPair<QFileSystemModelPrivate::QFileSystemNode*, int> &oldNode = oldNodes.at(i);
         newList.append(d->index(oldNode.first, oldNode.second));
     }