diff --git a/Firmware/lcd.cpp b/Firmware/lcd.cpp
index 765a821a9..b2f90c6cd 100644
--- a/Firmware/lcd.cpp
+++ b/Firmware/lcd.cpp
@@ -189,7 +189,7 @@ static void lcd_begin(uint8_t clear)
 	#endif
 }
 
-static int lcd_putchar(char c, FILE *)
+static void lcd_putchar(char c, FILE *)
 {
 	lcd_write(c);
 }
diff --git a/Firmware/lcd.h b/Firmware/lcd.h
index d4d978f2c..307e9486c 100644
--- a/Firmware/lcd.h
+++ b/Firmware/lcd.h
@@ -11,7 +11,7 @@
 extern FILE _lcdout;
 
 #define lcdout (&_lcdout)
-extern int lcd_putchar(char c, FILE *stream);
+extern void lcd_putchar(char c, FILE *stream);
 
 extern void lcd_init(void);