diff --git a/arch/arm/src/nrf52/hardware/nrf52_twi.h b/arch/arm/src/nrf52/hardware/nrf52_twi.h
index 98d908a2a6..200dc5c924 100644
--- a/arch/arm/src/nrf52/hardware/nrf52_twi.h
+++ b/arch/arm/src/nrf52/hardware/nrf52_twi.h
@@ -154,10 +154,10 @@
 
 #define TWIM_FREQUENCY_100KBPS              (0x01980000) /* 100 kbps */
 #define TWIM_FREQUENCY_250KBPS              (0x04000000) /* 250 kbps */
-#ifdef NRF52_I2C_MASTER_WORKAROUND_400KBPS_TIMING
-#define TWIM_FREQUENCY_400KBPS              (0x06200000) /* 400 kbps */
+#ifdef CONFIG_NRF52_I2C_MASTER_WORKAROUND_400KBPS_TIMING
+#  define TWIM_FREQUENCY_400KBPS            (0x06200000) /* 390 kbps */
 #else
-#define TWIM_FREQUENCY_400KBPS              (0x06400000) /* 400 kbps */
+#  define TWIM_FREQUENCY_400KBPS            (0x06400000) /* 400 kbps */
 #endif
 
 /* RXDMAXCNT Register */