diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
index 026537af4..6af6d71e2 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Tengu.java
@@ -149,7 +149,7 @@ public class Tengu extends Mob {
 		
 		LockedFloor lock = Dungeon.hero.buff(LockedFloor.class);
 		if (lock != null) {
-			if (Dungeon.isChallenged(Challenges.STRONGER_BOSSES))   lock.addTime(dmg/2f);
+			if (Dungeon.isChallenged(Challenges.STRONGER_BOSSES))   lock.addTime(2*dmg/3f);
 			else                                                    lock.addTime(dmg);
 		}