diff --git a/platform/avr-ravenlcd/lcd.c b/platform/avr-ravenlcd/lcd.c
index 3c4f9e230..0fe92b80a 100644
--- a/platform/avr-ravenlcd/lcd.c
+++ b/platform/avr-ravenlcd/lcd.c
@@ -411,7 +411,7 @@ lcd_num_putdec(int numb, lcd_padding_t padding)
     }
 
     /* Convert to BCD */
-    bcd = itobcd(ABS(numb));
+    bcd = itobcd(abs(numb));
 
     /* Print */
     return lcd_num_print(bcd, (bool)(numb<0), padding);