diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/special/SpecialRoom.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/special/SpecialRoom.java
index 4301e2643..c30a473c0 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/special/SpecialRoom.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/special/SpecialRoom.java
@@ -165,6 +165,8 @@ public abstract class SpecialRoom extends Room {
 
 			//60% chance for front of queue, 30% chance for next, 10% for one after that
 			int index = Random.chances(new float[]{6, 3, 1});
+			while (index > floorSpecials.size()) index--;
+
 			Room r = Reflection.newInstance(floorSpecials.get( index ));
 
 			if (r instanceof WeakFloorRoom){