diff --git a/src/Gui/SceneInspector.cpp b/src/Gui/SceneInspector.cpp
index 9df15bbb4b..87bbf42253 100644
--- a/src/Gui/SceneInspector.cpp
+++ b/src/Gui/SceneInspector.cpp
@@ -101,7 +101,7 @@ void SceneModel::setNode(QModelIndex index, SoNode* node)
             SoNode* child = group->getChild(i);
             setNode(this->index(i, 0, index), child);
 
-            QMap<SoNode*, QString>::iterator it = nodeNames.find(child);
+            QHash<SoNode*, QString>::iterator it = nodeNames.find(child);
             if (it != nodeNames.end()) {
                 this->setData(this->index(i, 1, index), QVariant(it.value()));
             }
@@ -113,7 +113,7 @@ void SceneModel::setNode(QModelIndex index, SoNode* node)
     // insert icon
 }
 
-void SceneModel::setNodeNames(const QMap<SoNode*, QString>& names)
+void SceneModel::setNodeNames(const QHash<SoNode*, QString>& names)
 {
     nodeNames = names;
 }
@@ -173,7 +173,7 @@ void DlgInspector::setNodeNames(Gui::Document* doc)
 {
     std::vector<Gui::ViewProvider*> vps = doc->getViewProvidersOfType
             (Gui::ViewProviderDocumentObject::getClassTypeId());
-    QMap<SoNode*, QString> nodeNames;
+    QHash<SoNode*, QString> nodeNames;
     for (std::vector<Gui::ViewProvider*>::iterator it = vps.begin(); it != vps.end(); ++it) {
         Gui::ViewProviderDocumentObject* vp = static_cast<Gui::ViewProviderDocumentObject*>(*it);
         App::DocumentObject* obj = vp->getObject();
diff --git a/src/Gui/SceneInspector.h b/src/Gui/SceneInspector.h
index 27ff489ef2..48d90d9693 100644
--- a/src/Gui/SceneInspector.h
+++ b/src/Gui/SceneInspector.h
@@ -25,7 +25,7 @@
 
 #include <QStandardItemModel>
 #include <QDialog>
-#include <QMap>
+#include <QHash>
 
 class SoNode;
 
@@ -56,13 +56,13 @@ public:
     /// insert the first node in tree
     void setNode(SoNode* node);
     /// set names per node
-    void setNodeNames(const QMap<SoNode*, QString>& names);
+    void setNodeNames(const QHash<SoNode*, QString>& names);
     /// returns standard parent's flags
     Qt::ItemFlags flags (const QModelIndex & index) const;
 
 private:
     void setNode(QModelIndex, SoNode*);
-    QMap<SoNode*, QString> nodeNames;
+    QHash<SoNode*, QString> nodeNames;
 };
 
 /// Dialog window to display scenegraph model as a tree