diff --git a/src/TowerDefense.cpp b/src/TowerDefense.cpp
index 312311f..59510f3 100644
--- a/src/TowerDefense.cpp
+++ b/src/TowerDefense.cpp
@@ -14,6 +14,7 @@ extern "C"
 #endif
 
 int main(int argc, const char* args[]) {
+    // remove the outdated binary
     td::utils::Updater::removeOldFile();
 
     Display::create();