diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/tiles/FogOfWar.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/tiles/FogOfWar.java
index 33ce0be27..127af0168 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/tiles/FogOfWar.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/tiles/FogOfWar.java
@@ -127,6 +127,7 @@ public class FogOfWar extends Image {
 	public synchronized void updateFogArea(int x, int y, int w, int h){
 		updated.union(x, y);
 		updated.union(x + w, y + h);
+		updated = updated.intersect( new Rect(0, 0, mapWidth, mapHeight) );
 	}
 
 	public synchronized void moveToUpdating(){