diff --git a/Source/missiles.cpp b/Source/missiles.cpp
index 76c128dfd..da5bea8d3 100644
--- a/Source/missiles.cpp
+++ b/Source/missiles.cpp
@@ -1398,8 +1398,8 @@ void AddBerserk(Missile &missile, Point dst, Direction /*midir*/)
 			monster.mMaxDamage = (GenerateRnd(10) + 120) * monster.mMaxDamage / 100 + slvl;
 			monster.mMinDamage2 = (GenerateRnd(10) + 120) * monster.mMinDamage2 / 100 + slvl;
 			monster.mMaxDamage2 = (GenerateRnd(10) + 120) * monster.mMaxDamage2 / 100 + slvl;
-			int r = (currlevel < 17 || currlevel > 20) ? 3 : 9;
-			monster.mlid = AddLight(monster.position.tile, r);
+			int lightRadius = (currlevel < 17 || currlevel > 20) ? 3 : 9;
+			monster.mlid = AddLight(monster.position.tile, lightRadius);
 			UseMana(missile._misource, SPL_BERSERK);
 			break;
 		}