diff --git a/src/nostalgia/core/studio/new_tilesheet_wizard.cpp b/src/nostalgia/core/studio/new_tilesheet_wizard.cpp
index c70de4d9..91dc01c2 100644
--- a/src/nostalgia/core/studio/new_tilesheet_wizard.cpp
+++ b/src/nostalgia/core/studio/new_tilesheet_wizard.cpp
@@ -20,14 +20,8 @@ namespace nostalgia::core {
 NewTilesheetWizardPage::NewTilesheetWizardPage(const studio::Context *ctx) {
 	m_ctx = ctx;
 	addLineEdit(tr("&Tile Sheet Name:"), QString(TileSheetName) + "*", "", [this](QString name) {
-			auto path = QString(TileSheetDir) + name + FileExt_ng;
-			auto err = m_ctx->project->exists(path);
-			if (err) {
-				showValidationError(tr("A tile sheet with this name already exists."));
-			}
-			return err;
-		}
-	);
+		return 0;
+	});
 	m_palettePicker = addComboBox(tr("&Palette:"), QString(Palette) + "*", {""});
 	m_ctx->project->subscribe(studio::ProjectEvent::FileRecognized, m_palettePicker, [this](QString path) {
 		if (path.startsWith(PaletteDir) && path.endsWith(FileExt_npal)) {
@@ -40,6 +34,12 @@ int NewTilesheetWizardPage::accept() {
 	const auto tilesheetName = field(TileSheetName).toString();
 	const auto palette = m_palettePicker->itemData(field(Palette).toInt()).toString();
 	const auto outPath = TileSheetDir + tilesheetName + FileExt_ng;
+	auto outPath = QString(TileSheetDir) + name + FileExt_ng;
+	auto err = m_ctx->project->exists(outPath);
+	if (err) {
+		showValidationError(tr("A tile sheet with this name already exists."));
+		return err;
+	}
 	NostalgiaGraphic ng;
 	ng.columns = 1;
 	ng.rows = 1;