diff --git a/src/exporters/exporterTools.cpp b/src/exporters/exporterTools.cpp
index 25c1cc5..ab20fc7 100644
--- a/src/exporters/exporterTools.cpp
+++ b/src/exporters/exporterTools.cpp
@@ -6,7 +6,7 @@ std::vector<Timed<Shape>> dummyShapeIfEmpty(const Timeline<Shape>& shapes) {
 	std::copy(shapes.begin(), shapes.end(), std::back_inserter(result));
 	if (result.empty()) {
 		// Add zero-length empty mouth
-		result.push_back(Timed<Shape>(0_cs, 0_cs, Shape::A));
+		result.push_back(Timed<Shape>(0_cs, 0_cs, Shape::X));
 	}
 	return result;
 }