diff --git a/src/formula/function.cpp b/src/formula/function.cpp
index 966101dd2a3..77144c63102 100644
--- a/src/formula/function.cpp
+++ b/src/formula/function.cpp
@@ -281,7 +281,7 @@ DEFINE_WFL_FUNCTION(debug_print, 1, 2)
 
 	if(game_config::debug && game_display::get_singleton()) {
 		game_display::get_singleton()->get_chat_manager().add_chat_message(
-			std::time(nullptr), "WFL", 0, str, events::chat_handler::MESSAGE_PUBLIC, false);
+			std::time(nullptr), speaker, 0, str, events::chat_handler::MESSAGE_PUBLIC, false);
 	}
 
 	return value;