diff --git a/board/technologic/ts7680/genimage.cfg b/board/technologic/ts7680/genimage.cfg
index b5599823dc..70b1dac64f 100644
--- a/board/technologic/ts7680/genimage.cfg
+++ b/board/technologic/ts7680/genimage.cfg
@@ -3,7 +3,7 @@ image sdcard.img {
 	}
 
 	partition unused {
-		size =  512B
+		size =  512
 	}
 
 	partition rootfs {