diff --git a/libraries/AP_DAL/examples/AP_DAL_Standalone/main.cpp b/libraries/AP_DAL/examples/AP_DAL_Standalone/main.cpp
index 7cbfc1b56c..05088f2d85 100644
--- a/libraries/AP_DAL/examples/AP_DAL_Standalone/main.cpp
+++ b/libraries/AP_DAL/examples/AP_DAL_Standalone/main.cpp
@@ -43,6 +43,7 @@ public:
             nullptr,
             nullptr,
             nullptr,
+            nullptr,
             nullptr
             ) {}
     void run(int argc, char* const argv[], Callbacks* callbacks) const override {}