diff --git a/libraries/AP_HAL_Empty/HAL_Empty_Class.cpp b/libraries/AP_HAL_Empty/HAL_Empty_Class.cpp
index bebca5d03b..484feb45aa 100644
--- a/libraries/AP_HAL_Empty/HAL_Empty_Class.cpp
+++ b/libraries/AP_HAL_Empty/HAL_Empty_Class.cpp
@@ -32,6 +32,7 @@ HAL_Empty::HAL_Empty() :
         nullptr,            /* no uartE */
         nullptr,            /* no uartF */
         nullptr,            /* no uartG */
+        nullptr,            /* no uartH */
         &spiDeviceManager,
         &analogIn,
         &storageDriver,