diff --git a/flight/Revolution/System/pios_board.c b/flight/Revolution/System/pios_board.c
index e54752770..13ecca3de 100644
--- a/flight/Revolution/System/pios_board.c
+++ b/flight/Revolution/System/pios_board.c
@@ -805,9 +805,13 @@ void PIOS_Board_Init(void) {
 #endif
 
 
+#if defined(PIOS_INCLUDE_HMC5883)
 	PIOS_HMC5883_Init(&pios_hmc5883_cfg);
+#endif
 	
+#if defined(PIOS_INCLUDE_MS5611)
 	PIOS_MS5611_Init(&pios_ms5611_cfg, pios_i2c_pressure_adapter_id);
+#endif
 }
 
 /**