diff --git a/flashchips/winbond.c b/flashchips/winbond.c
index 6d46dcc0e..973bf2c30 100644
--- a/flashchips/winbond.c
+++ b/flashchips/winbond.c
@@ -601,7 +601,7 @@
 		/* supports SFDP */
 		/* OTP: 1024B total, 256B reserved; read 0x48; write 0x42, erase 0x44, read ID 0x4B */
 		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA | FEATURE_WRSR2,
-		.tested		= TEST_OK_PREW,
+		.tested		= TEST_OK_PREWB,
 		.probe		= PROBE_SPI_RDID,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=