diff --git a/flight/PiOS/Common/pios_hmc5883.c b/flight/PiOS/Common/pios_hmc5883.c
index 14d4f96fe..4d43f7bd2 100644
--- a/flight/PiOS/Common/pios_hmc5883.c
+++ b/flight/PiOS/Common/pios_hmc5883.c
@@ -393,7 +393,7 @@ int32_t PIOS_HMC5883_Test(void)
  */
 bool PIOS_HMC5883_IRQHandler(void)
 {
-	pios_hmc5883_data_ready = true
+	pios_hmc5883_data_ready = true;
 	
 	return false;
 }
diff --git a/flight/PiOS/inc/pios_hmc5883.h b/flight/PiOS/inc/pios_hmc5883.h
index d9c362e9d..91452028a 100644
--- a/flight/PiOS/inc/pios_hmc5883.h
+++ b/flight/PiOS/inc/pios_hmc5883.h
@@ -107,7 +107,7 @@ extern bool PIOS_HMC5883_NewDataAvailable(void);
 extern int32_t PIOS_HMC5883_ReadMag(int16_t out[3]);
 extern uint8_t PIOS_HMC5883_ReadID(uint8_t out[4]);
 extern int32_t PIOS_HMC5883_Test(void);
-bool void PIOS_HMC5883_IRQHandler();
+bool PIOS_HMC5883_IRQHandler();
 #endif /* PIOS_HMC5883_H */
 
 /**