diff --git a/common/lc_mainwindow.cpp b/common/lc_mainwindow.cpp
index fc06d669..6d41bdd7 100644
--- a/common/lc_mainwindow.cpp
+++ b/common/lc_mainwindow.cpp
@@ -2297,6 +2297,11 @@ void lcMainWindow::UpdateModels()
 			SetCurrentPieceInfo(nullptr);
 }
 
+void lcMainWindow::UpdateInUseCategory()
+{
+	mPartSelectionWidget->UpdateInUseCategory();
+}
+
 void lcMainWindow::UpdateCategories()
 {
 	mPartSelectionWidget->UpdateCategories();
diff --git a/common/lc_mainwindow.h b/common/lc_mainwindow.h
index 520b176b..5de0918c 100644
--- a/common/lc_mainwindow.h
+++ b/common/lc_mainwindow.h
@@ -272,6 +272,7 @@ class lcMainWindow : public QMainWindow
 	void UpdateShadingMode();
 	void UpdateSelectionMode();
 	void UpdateModels();
+	void UpdateInUseCategory();
 	void UpdateCategories();
 	void UpdateTitle();
 	void UpdateModified(bool Modified);
diff --git a/common/lc_model.cpp b/common/lc_model.cpp
index e7487101..e44fa172 100644
--- a/common/lc_model.cpp
+++ b/common/lc_model.cpp
@@ -2355,9 +2355,12 @@ void lcModel::DeleteSelectedObjects()
 {
 	if (RemoveSelectedObjects())
 	{
-		if (!mIsPreview) {
+		if (!mIsPreview)
+		{
 			gMainWindow->UpdateTimeline(false, false);
 			gMainWindow->UpdateSelectedObjects(true);
+			gMainWindow->UpdateInUseCategory();
+
 			UpdateAllViews();
 			SaveCheckpoint(tr("Deleting"));
 		}
@@ -3182,6 +3185,12 @@ void lcModel::SetObjectsProperty(const std::vector<lcObject*>& Objects, lcObject
 	{
 		gMainWindow->UpdateTimeline(false, true);
 	}
+
+	// todo: fix hacky category update
+	if (PropertyId == lcObjectPropertyId::PieceId)
+	{
+		gMainWindow->UpdateInUseCategory();
+	}
 }
 
 bool lcModel::AnyPiecesSelected() const
diff --git a/common/lc_partselectionwidget.cpp b/common/lc_partselectionwidget.cpp
index 06dc333f..56db9b74 100644
--- a/common/lc_partselectionwidget.cpp
+++ b/common/lc_partselectionwidget.cpp
@@ -581,6 +581,12 @@ void lcPartSelectionListView::ToggleFixedColor()
 	mListModel->ToggleColorLocked();
 }
 
+void lcPartSelectionListView::UpdateInUseCategory()
+{
+	if (mCategoryType == lcPartCategoryType::PartsInUse)
+		mListModel->SetCurrentModelCategory();
+}
+
 void lcPartSelectionListView::UpdateViewMode()
 {
 	setViewMode(mListModel->GetIconSize() && !mListModel->IsListMode() ? QListView::IconMode : QListView::ListMode);
@@ -1112,6 +1118,11 @@ void lcPartSelectionWidget::RemoveFromPalette()
 	}
 }
 
+void lcPartSelectionWidget::UpdateInUseCategory()
+{
+	mPartsWidget->UpdateInUseCategory();
+}
+
 void lcPartSelectionWidget::UpdateCategories()
 {
 	QTreeWidgetItem* CurrentItem = mCategoriesWidget->currentItem();
diff --git a/common/lc_partselectionwidget.h b/common/lc_partselectionwidget.h
index c5e901bc..f08deceb 100644
--- a/common/lc_partselectionwidget.h
+++ b/common/lc_partselectionwidget.h
@@ -177,6 +177,7 @@ class lcPartSelectionListView : public QListView
 		return mContextInfo;
 	}
 
+	void UpdateInUseCategory();
 	void UpdateViewMode();
 
 public slots:
@@ -212,6 +213,7 @@ class lcPartSelectionWidget : public QWidget
 	void UpdateThumbnails();
 	void SetDefaultPart();
 	void UpdateModels();
+	void UpdateInUseCategory();
 	void UpdateCategories();
 	void LoadState(QSettings& Settings);
 	void SaveState(QSettings& Settings);