diff --git a/optionals/compat_rhs_usf3/CfgWeapons.hpp b/optionals/compat_rhs_usf3/CfgWeapons.hpp
index 45e4e8b982..db71543f6e 100644
--- a/optionals/compat_rhs_usf3/CfgWeapons.hpp
+++ b/optionals/compat_rhs_usf3/CfgWeapons.hpp
@@ -495,6 +495,8 @@ class CfgWeapons {
             };
         };
         class WeaponSlotsInfo: WeaponSlotsInfo {
+            // One WeaponSlot with a positive value for iconScale forces game to use icon overlay method.
+            // Required, because the inventory icon has no accessory variants.
             class MuzzleSlot {
                 iconScale = 0.1;
             };