diff --git a/src/driver/lcdd.h b/src/driver/lcdd.h
index a2299cd8a..0086c0aa1 100644
--- a/src/driver/lcdd.h
+++ b/src/driver/lcdd.h
@@ -182,6 +182,7 @@ class CLCD
 		void wake_up();
 		void setled(void) { return; };
 		void setlcdparameter(void);
+		void setBacklight(bool) { return; };
 
 		static CLCD* getInstance();
 		void init(const char * fontfile, const char * fontname,