diff --git a/addons/common/functions/fnc_ambientBrightness.sqf b/addons/common/functions/fnc_ambientBrightness.sqf
index 034129735a..f29ff9e8e5 100644
--- a/addons/common/functions/fnc_ambientBrightness.sqf
+++ b/addons/common/functions/fnc_ambientBrightness.sqf
@@ -11,4 +11,4 @@
  */
 #include "script_component.hpp"
 
-sunOrMoon * sunOrMoon + moonIntensity/5 min 1
+sunOrMoon * sunOrMoon * (1 - overcast * 0.25) + (moonIntensity/5 min 1) * (1 - overcast)