diff --git a/src/nostalgia/core/studio/tilesheeteditor.cpp b/src/nostalgia/core/studio/tilesheeteditor.cpp
index 4d1b03777..f6711ea2a 100644
--- a/src/nostalgia/core/studio/tilesheeteditor.cpp
+++ b/src/nostalgia/core/studio/tilesheeteditor.cpp
@@ -125,6 +125,7 @@ void SheetData::updatePixel(QVariant pixelItem) {
 	if (p && p != m_prevPixelUpdated) {
 		m_cmdStack.push(new UpdatePixelsCommand(m_pixels, m_palette, p, m_selectedColor, m_cmdIdx));
 		m_prevPixelUpdated = p;
+		emit changeOccurred();
 	}
 }
 
@@ -237,6 +238,7 @@ TileSheetEditor::TileSheetEditor(QString path, const studio::Context *ctx, QWidg
 	m_canvas->setResizeMode(QQuickWidget::SizeRootObjectToView);
 	setColorTable(m_sheetData.palette());
 	restoreState();
+	connect(&m_sheetData, &SheetData::changeOccurred, [this] { setUnsavedChanges(true); });
 }
 
 TileSheetEditor::~TileSheetEditor() {
@@ -247,7 +249,7 @@ QString TileSheetEditor::itemName() {
 	return m_itemName;
 }
 
-void TileSheetEditor::save() {
+void TileSheetEditor::saveItem() {
 }
 
 QUndoStack *TileSheetEditor::undoStack() {
diff --git a/src/nostalgia/core/studio/tilesheeteditor.hpp b/src/nostalgia/core/studio/tilesheeteditor.hpp
index 349a0b023..613600a85 100644
--- a/src/nostalgia/core/studio/tilesheeteditor.hpp
+++ b/src/nostalgia/core/studio/tilesheeteditor.hpp
@@ -69,6 +69,8 @@ class SheetData: public QObject {
 		void updatePixels(const NostalgiaGraphic *ng, const NostalgiaPalette *npal);
 
 	signals:
+		void changeOccurred();
+
 		void columnsChanged(int);
 
 		void rowsChanged(int);
@@ -103,7 +105,7 @@ class TileSheetEditor: public studio::Editor {
 
 		QString itemName() override;
 
-		void save() override;
+		void saveItem() override;
 
 		QUndoStack *undoStack() override;