diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_editor.cpp b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_editor.cpp
index d03cdab3d..768576755 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_editor.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_editor.cpp
@@ -78,6 +78,8 @@ void CParticleEditor::release()
 void CParticleEditor::setActiveNode(CWorkspaceNode *node)
 {
 	if (node == _ActiveNode) return;
+	if (node == 0)
+		_ActiveNode->getPSModel()->hide();
 	_ActiveNode = node;
 
 	bool wasRunning = _State == State::RunningSingle;
diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_node.cpp b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_node.cpp
index 3dfc1ce2c..15761c505 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_node.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_node.cpp
@@ -378,6 +378,7 @@ void CParticleWorkspace::removeNode(uint index)
 {
 	nlassert(index < _Nodes.size());
 	_Nodes[index] = NULL; // delete the smart-ptr target
+	delete _Nodes[index];
 	_Nodes.erase(_Nodes.begin() + index);
 	touch();
 }
diff --git a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_workspace_dialog.cpp b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_workspace_dialog.cpp
index cb49def05..74182120c 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_workspace_dialog.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/plugins/object_viewer/particle_workspace_dialog.cpp
@@ -305,6 +305,8 @@ void CParticleWorkspaceDialog::customContextMenu()
 	_instanciateAction->setEnabled(stopped);
 	_savePSAction->setEnabled(stopped);
 	_saveAsPSAction->setEnabled(stopped);
+	_removeFromWSAction->setEnabled(stopped);
+	_clearContentAction->setEnabled(stopped);
 
 	popurMenu->exec(QCursor::pos());
 	delete popurMenu;
@@ -369,13 +371,14 @@ void CParticleWorkspaceDialog::clearContent()
 
 void CParticleWorkspaceDialog::removePS()
 {
-	if (_treeModel->getOwnerNode(_currentItem) == Modules::psEdit().getActiveNode())
+	CWorkspaceNode *node = _currentItem->getNode();
+	if (node == Modules::psEdit().getActiveNode())
 		Modules::psEdit().setActiveNode(NULL);
 
 	QModelIndex index = _ui.treeView->currentIndex();
 	_ui.treeView->setCurrentIndex(index.parent());
 	clickedItem(index.parent());
-	Modules::psEdit().getParticleWorkspace()->removeNode(static_cast<CParticleTreeItem *>(index.internalPointer())->getNode());
+	Modules::psEdit().getParticleWorkspace()->removeNode(node);
 	_treeModel->removeRows(index.row(), index.parent());
 }