diff --git a/src/systemcmds/tests/test_autodeclination.cpp b/src/systemcmds/tests/test_autodeclination.cpp
index 0740411330..bdaed6cc48 100644
--- a/src/systemcmds/tests/test_autodeclination.cpp
+++ b/src/systemcmds/tests/test_autodeclination.cpp
@@ -24,7 +24,7 @@ private:
 
 bool AutoDeclinationTest::autodeclination_check()
 {
-	ut_assert("declination differs more than 0.1 degrees", get_mag_declination(47.0, 8.0) - 1.6f < 0.1f);
+	ut_assert("declination differs more than 0.1 degrees", get_mag_declination(47.0, 8.0) - 2.6f < 0.1f);
 	// Test world endpoints
 	ut_assert("declination differs more than 0.1 degrees", get_mag_declination(-90.0, 180.0) - 47.0f < 0.1f);
 	ut_assert("declination differs more than 0.1 degrees", get_mag_declination(-90.0, -180.0) - 47.0f < 0.1f);