diff --git a/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.cpp b/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.cpp
index e1f51afad6..9fc4089a65 100644
--- a/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.cpp
+++ b/libraries/AP_Declination/examples/AP_Declination_test/AP_Declination_test.cpp
@@ -1,5 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
+#include <AP_HAL/AP_HAL.h>
 #include <AP_Common/AP_Common.h>
 #include <AP_Param/AP_Param.h>
 #include <StorageManager/StorageManager.h>
diff --git a/libraries/AP_Declination/examples/AP_Declination_test/Makefile b/libraries/AP_Declination/examples/AP_Declination_test/Makefile
index 9cc8742e84..f5daf25151 100644
--- a/libraries/AP_Declination/examples/AP_Declination_test/Makefile
+++ b/libraries/AP_Declination/examples/AP_Declination_test/Makefile
@@ -1,4 +1 @@
 include ../../../../mk/apm.mk
-
-sitl:
-	make -f ../../../../libraries/Desktop/Desktop.mk
diff --git a/libraries/AP_Declination/examples/AP_Declination_test/make.inc b/libraries/AP_Declination/examples/AP_Declination_test/make.inc
index 2de7da6ef2..e12a370b8e 100644
--- a/libraries/AP_Declination/examples/AP_Declination_test/make.inc
+++ b/libraries/AP_Declination/examples/AP_Declination_test/make.inc
@@ -6,3 +6,4 @@ LIBRARIES += AP_Param
 LIBRARIES += AP_Progmem
 LIBRARIES += Filter
 LIBRARIES += StorageManager
+LIBRARIES += AP_ADC