diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index cd9da3885d79..656a27efb2c8 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -5,6 +5,7 @@
 
 struct device;
 struct gpio_desc;
+struct seq_file;
 
 /**
  * struct gpio_chip - abstract a GPIO controller