diff --git a/libraries/mbed/targets/hal/TARGET_WIZNET/TARGET_W7500x/TARGET_WIZwiki_W7500/device.h b/libraries/mbed/targets/hal/TARGET_WIZNET/TARGET_W7500x/TARGET_WIZwiki_W7500/device.h
index aae25ad347..8299147f84 100644
--- a/libraries/mbed/targets/hal/TARGET_WIZNET/TARGET_W7500x/TARGET_WIZwiki_W7500/device.h
+++ b/libraries/mbed/targets/hal/TARGET_WIZNET/TARGET_W7500x/TARGET_WIZwiki_W7500/device.h
@@ -43,7 +43,7 @@
 #define DEVICE_SERIAL           1
 
 #define DEVICE_I2C              1
-#define DEVICE_I2CSLAVE         1
+#define DEVICE_I2CSLAVE         0
 
 #define DEVICE_SPI              1
 #define DEVICE_SPISLAVE         1