diff --git a/wbsio_spi.c b/wbsio_spi.c
index 7889f91..851c87f 100644
--- a/wbsio_spi.c
+++ b/wbsio_spi.c
@@ -84,7 +84,7 @@
 
 	register_spi_programmer(&spi_programmer_wbsio);
 	msg_pdbg("%s: Winbond saved on 4 register bits so max chip size is "
-		 "1024 KB!\n", __func__);
+		 "1024 kB!\n", __func__);
 	max_rom_decode.spi = 1024 * 1024;
 
 	return 0;