diff --git a/src/subs_controller.cpp b/src/subs_controller.cpp
index 212d2dbadc..3b0eb4b1dd 100644
--- a/src/subs_controller.cpp
+++ b/src/subs_controller.cpp
@@ -389,11 +389,11 @@ void SubsController::Redo() {
 }
 
 wxString SubsController::GetUndoDescription() const {
-	return IsUndoStackEmpty() ? "" : undo_stack.back().undo_description;
+	return IsUndoStackEmpty() ? wxString() : undo_stack.back().undo_description;
 }
 
 wxString SubsController::GetRedoDescription() const {
-	return IsRedoStackEmpty() ? "" : redo_stack.back().undo_description;
+	return IsRedoStackEmpty() ? wxString() : redo_stack.back().undo_description;
 }
 
 agi::fs::path SubsController::Filename() const {