diff --git a/libraries/AP_Compass/Compass.h b/libraries/AP_Compass/Compass.h
index a09354638a..876fd9cde4 100644
--- a/libraries/AP_Compass/Compass.h
+++ b/libraries/AP_Compass/Compass.h
@@ -2,7 +2,7 @@
 #define Compass_h
 
 #include <inttypes.h>
-#include <AP_Math.h>
+#include "../AP_Math/AP_Math.h"
 
 class Compass
 {
diff --git a/libraries/AP_Compass/keywords.txt b/libraries/AP_Compass/keywords.txt
index 351f023fc0..0768531eff 100644
--- a/libraries/AP_Compass/keywords.txt
+++ b/libraries/AP_Compass/keywords.txt
@@ -8,8 +8,8 @@ set_orientation	KEYWORD2
 set_offsets	KEYWORD2
 set_declination	KEYWORD2
 heading	KEYWORD2
-heading_X	KEYWORD2
-heading_Y	KEYWORD2
+heading_x	KEYWORD2
+heading_y	KEYWORD2
 mag_x	KEYWORD2
 mag_y	KEYWORD2
 mag_z	KEYWORD2