diff --git a/flashchips.h b/flashchips.h
index 348f2fd..f00be3b 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -908,8 +908,9 @@
 #define WINBOND_NEX_W25Q128_V	0x4018	/* W25Q128BV; W25Q128FV in SPI mode (default) */
 #define WINBOND_NEX_W25Q256_V	0x4019	/* W25Q256FV */
 #define WINBOND_NEX_W25Q20_W	0x5012	/* W25Q20BW */
-#define WINBOND_NEX_W25Q40_W	0x5013	/* W25Q40BW */
+#define WINBOND_NEX_W25Q40BW	0x5013	/* W25Q40BW */
 #define WINBOND_NEX_W25Q80BW	0x5014	/* W25Q80BW */
+#define WINBOND_NEX_W25Q40EW	0x6013	/* W25Q40EW */
 #define WINBOND_NEX_W25Q80EW	0x6014	/* W25Q80EW */
 #define WINBOND_NEX_W25Q16_W	0x6015	/* W25Q16DW */
 #define WINBOND_NEX_W25Q32_W	0x6016	/* W25Q32DW; W25Q32FV in QPI mode */