diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h
index 9475f99a9694..5a08693b8fb1 100644
--- a/drivers/gpio/gpiolib-acpi.h
+++ b/drivers/gpio/gpiolib-acpi.h
@@ -14,7 +14,6 @@
 
 #include <linux/gpio/consumer.h>
 
-struct acpi_device;
 struct device;
 struct fwnode_handle;