diff --git a/boards/arm/nrf52/nrf52-feather/src/nrf52_i2c.c b/boards/arm/nrf52/nrf52-feather/src/nrf52_i2c.c
index 3eb976a036..1ea360a989 100644
--- a/boards/arm/nrf52/nrf52-feather/src/nrf52_i2c.c
+++ b/boards/arm/nrf52/nrf52-feather/src/nrf52_i2c.c
@@ -88,7 +88,7 @@ int nrf52_i2ctool(void)
 #endif
 
 #ifdef CONFIG_NRF52_I2C1_MASTER
-  ret = nrf52_i2c_register(0);
+  ret = nrf52_i2c_register(1);
 #endif
   return ret;
 }