diff --git a/src/plugins/qmldesigner/libs/designercore/designercoreutils/stylesheetmerger.cpp b/src/plugins/qmldesigner/libs/designercore/designercoreutils/stylesheetmerger.cpp
index d1dbca9e8e2..9cbd70cefcf 100644
--- a/src/plugins/qmldesigner/libs/designercore/designercoreutils/stylesheetmerger.cpp
+++ b/src/plugins/qmldesigner/libs/designercore/designercoreutils/stylesheetmerger.cpp
@@ -331,10 +331,11 @@ void StylesheetMerger::replaceRootNode(ModelNode& templateRootNode)
 // Move the newly created nodes to the correct position in the parent node
 void StylesheetMerger::adjustNodeIndex(ModelNode &node)
 {
-    if (!m_reparentInfoHash.contains(node.id()))
+    auto found = m_reparentInfoHash.find(node.id());
+    if (found == m_reparentInfoHash.end())
         return;
 
-    ReparentInfo info = m_reparentInfoHash.value(node.id());
+    ReparentInfo info = *found;
     if (info.parentIndex < 0)
         return;