diff --git a/game/modules/tome/data/talents/spells/explosives.lua b/game/modules/tome/data/talents/spells/explosives.lua
index 2ed07684704ee7cba62d9299f1fdfdb9c24940ce..8323c66685d2eae85baa96570f1ec77115a2c0e6 100644
--- a/game/modules/tome/data/talents/spells/explosives.lua
+++ b/game/modules/tome/data/talents/spells/explosives.lua
@@ -92,7 +92,7 @@ newTalent{
 			for px, ys in pairs(grids) do for py, _ in pairs(ys) do nb = nb + 1 end end
 			nb = theorical_nb - nb
 			if nb > 0 then
-				local mult = (math.log10(nb) / (6 - self:getTalentLevelRaw(self.T_EXPLOSION_EXPERT)))
+				local mult = (math.log10(nb) / math.min(6 - self:getTalentLevelRaw(self.T_EXPLOSION_EXPERT), 5))
 				print("Adjusting explosion damage to account for ", nb, " lost tiles => ", mult * 100)
 				dam = dam + dam * mult
 			end