diff --git a/esphome/components/restart/button/restart_button.h b/esphome/components/restart/button/restart_button.h
index 974db0cec48..4baac6472c1 100644
--- a/esphome/components/restart/button/restart_button.h
+++ b/esphome/components/restart/button/restart_button.h
@@ -7,6 +7,9 @@ namespace esphome::restart {
 
 class RestartButton final : public button::Button, public Component {
  public:
+  // User provided, not "= default": `new(p) RestartButton()` would zero-fill .bss that is already zero.
+  RestartButton() {}
+
   void dump_config() override;
 
  protected: