diff --git a/esphome/components/ld2450/button/restart_button.h b/esphome/components/ld2450/button/restart_button.h
index 9219011f8ba..87b1a2bbd1e 100644
--- a/esphome/components/ld2450/button/restart_button.h
+++ b/esphome/components/ld2450/button/restart_button.h
@@ -7,7 +7,8 @@ namespace esphome::ld2450 {
 
 class RestartButton : public button::Button, public Parented<LD2450Component> {
  public:
-  RestartButton() = default;
+  // User provided, not "= default": `new(p) RestartButton()` would zero-fill .bss that is already zero.
+  RestartButton() {}
 
  protected:
   void press_action() override;