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 c30a473c0..e359245d7 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
@@ -165,7 +165,7 @@ 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--;
+			while (index >= floorSpecials.size()) index--;
 
 			Room r = Reflection.newInstance(floorSpecials.get( index ));