diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 32720ba..0f8265f 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -25,9 +25,9 @@
  * warning when something is wrongly called.
  */
 
-static inline int gpio_is_valid(int number)
+static inline bool gpio_is_valid(int number)
 {
-	return 0;
+	return false;
 }
 
 static inline int gpio_request(unsigned gpio, const char *label)