diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index e8dd306e17ed..d80276368b81 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -687,6 +687,7 @@ static int acpi_button_probe(struct platform_device *pdev)
 	acpi_button_remove_fs(button);
 err_free_button:
 	kfree(button);
+	memset(acpi_device_class(device), 0, sizeof(acpi_device_class));
 	return error;
 }