diff --git a/changelog.md b/changelog.md
index b75fab07..09058d82 100644
--- a/changelog.md
+++ b/changelog.md
@@ -20,6 +20,8 @@ Saves from 4.0.0 are compatible with 4.0.1.
 ## Fixes
 * **[UI]** Statistics window tick marks are now always integers.
 
+* **[Flight Planning]** Fixed potential issue with angles > 360° or < 0° being generated when summing two angles.
+
 # 4.0.0
 
 Saves from 3.x are not compatible with 4.0.
diff --git a/game/utils.py b/game/utils.py
index 0bd1f79c..68e38d31 100644
--- a/game/utils.py
+++ b/game/utils.py
@@ -18,12 +18,7 @@ KPH_TO_MS = 1 / MS_TO_KPH
 
 def heading_sum(h, a) -> int:
     h += a
-    if h > 360:
-        return h - 360
-    elif h < 0:
-        return 360 + h
-    else:
-        return h
+    return h % 360
 
 
 def opposite_heading(h):