1 files changed, 4 insertions, 1 deletions
diff --git a/src/plugins/qmldesigner/components/curveeditor/detail/curveitem.cpp b/src/plugins/qmldesigner/components/curveeditor/detail/curveitem.cpp
index e8dd168580..9f5ed0b7af 100644
--- a/src/plugins/qmldesigner/components/curveeditor/detail/curveitem.cpp
+++ b/src/plugins/qmldesigner/components/curveeditor/detail/curveitem.cpp
@@ -336,7 +336,7 @@ void CurveItem::setCurve(const AnimationCurve &curve)
 {
     freeClear(m_keyframes);
 
-    for (auto frame : curve.keyframes()) {
+    for (const auto &frame : curve.keyframes()) {
         auto *item = new KeyframeItem(frame, this);
         item->setLocked(locked());
         item->setComponentTransform(m_transform);
@@ -413,6 +413,9 @@ void CurveItem::connect(GraphicsScene *scene)
 
 void CurveItem::insertKeyframeByTime(double time)
 {
+    if (locked())
+        return;
+
     AnimationCurve acurve = curve();
     acurve.insert(time);
     setCurve(acurve);