diff --git a/src/app.h b/src/app.h
index 82caa10..2a5f967 100644
--- a/src/app.h
+++ b/src/app.h
@@ -253,6 +253,7 @@ public:
     int res_to_index(int res);
     std::string res_to_string(int res);
     void crash_test();
+    void stacktrace();
 
     void ui_save();
     void ui_restore();