diff --git a/flight/board_hw_defs/revolution/board_hw_defs.c b/flight/board_hw_defs/revolution/board_hw_defs.c
index b54dd119d..2bc703cd8 100644
--- a/flight/board_hw_defs/revolution/board_hw_defs.c
+++ b/flight/board_hw_defs/revolution/board_hw_defs.c
@@ -1224,7 +1224,7 @@ static const struct pios_i2c_adapter_cfg pios_i2c_pressure_adapter_cfg = {
 		.I2C_Ack                 = I2C_Ack_Enable,
 		.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit,
 		.I2C_DutyCycle           = I2C_DutyCycle_2,
-		.I2C_ClockSpeed          = 40000,	/* bits/s */
+		.I2C_ClockSpeed          = 400000,	/* bits/s */
 	},
 	.transfer_timeout_ms = 50,
 	.scl = {