diff --git a/libraries/AP_Compass/examples/AP_Compass_test/AP_Compass_test.cpp b/libraries/AP_Compass/examples/AP_Compass_test/AP_Compass_test.cpp
index c28bc89809..d4dcb01695 100644
--- a/libraries/AP_Compass/examples/AP_Compass_test/AP_Compass_test.cpp
+++ b/libraries/AP_Compass/examples/AP_Compass_test/AP_Compass_test.cpp
@@ -84,7 +84,7 @@ void loop()
         compass.learn_offsets();
 
         // capture min
-        const Vector3f &mag = compass.get_field();
+        const Vector3f &mag = compass.get_field_milligauss();
         if( mag.x < min[0] )
             min[0] = mag.x;
         if( mag.y < min[1] )