diff --git a/libraries/AP_HAL_ChibiOS/AP_HAL_ChibiOS_Namespace.h b/libraries/AP_HAL_ChibiOS/AP_HAL_ChibiOS_Namespace.h
index ed0fcbcf3c..f43d4a3319 100644
--- a/libraries/AP_HAL_ChibiOS/AP_HAL_ChibiOS_Namespace.h
+++ b/libraries/AP_HAL_ChibiOS/AP_HAL_ChibiOS_Namespace.h
@@ -9,7 +9,6 @@ namespace ChibiOS {
     class I2CDevice;
     class I2CDeviceManager;
     class OpticalFlow;
-    class PrivateMember;
     class RCInput;
     class RCOutput;
     class Scheduler;