diff --git a/include/button.h b/include/button.h
index 688b63b082..ee14fadf0c 100644
--- a/include/button.h
+++ b/include/button.h
@@ -6,6 +6,8 @@
 #ifndef __BUTTON_H
 #define __BUTTON_H
 
+struct udevice;
+
 /**
  * struct button_uc_plat - Platform data the uclass stores about each device
  *