diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
index 5698050..02e8cad 100644
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -60,7 +60,7 @@
 #define W1_READ_PSUPPLY		0xB4
 #define W1_MATCH_ROM		0x55
 
-#define W1_SLAVE_ACTIVE		(1<<0)
+#define W1_SLAVE_ACTIVE		0
 
 struct w1_slave
 {