diff --git a/src/cam.c b/src/cam.c
index 9feeee3..40d8be9 100644
--- a/src/cam.c
+++ b/src/cam.c
@@ -438,6 +438,7 @@ int lightship_check() {
 
             // Check heading delta > 4º
             int diff = epv.space.data.heading.value - lightship->last_pos.heading;
+            diff += (diff > 1800) ? -3600 : (diff < -1800) ? 3600 : 0;
             if (abs(diff) > 40) rv = 1;
 
             if (!rv) {