diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
index fc697e652..44f3d85d7 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/blobs/Blob.java
@@ -149,45 +149,47 @@ public class Blob extends Actor {
 		for (int i=area.top-1; i <= area.bottom; i++) {
 			for (int j = area.left-1; j <= area.right; j++) {
 				cell = j + i*Dungeon.level.width();
-				if (!blocking[cell]) {
-					
-					int count = 1;
-					int sum = cur[cell];
-					
-					if (j > area.left && !blocking[cell-1]) {
-						sum += cur[cell-1];
-						count++;
-					}
-					if (j < area.right && !blocking[cell+1]) {
-						sum += cur[cell+1];
-						count++;
-					}
-					if (i > area.top && !blocking[cell-Dungeon.level.width()]) {
-						sum += cur[cell-Dungeon.level.width()];
-						count++;
-					}
-					if (i < area.bottom && !blocking[cell+Dungeon.level.width()]) {
-						sum += cur[cell+Dungeon.level.width()];
-						count++;
-					}
-					
-					int value = sum >= count ? (sum / count) - 1 : 0;
-					off[cell] = value;
+				if (Dungeon.level.insideMap(cell)) {
+					if (!blocking[cell]) {
 
-					if (value > 0){
-						if (i < area.top)
-							area.top = i;
-						else if (i >= area.bottom)
-							area.bottom = i+1;
-						if (j < area.left)
-							area.left = j;
-						else if (j >= area.right)
-							area.right = j+1;
+						int count = 1;
+						int sum = cur[cell];
+
+						if (j > area.left && !blocking[cell-1]) {
+							sum += cur[cell-1];
+							count++;
+						}
+						if (j < area.right && !blocking[cell+1]) {
+							sum += cur[cell+1];
+							count++;
+						}
+						if (i > area.top && !blocking[cell-Dungeon.level.width()]) {
+							sum += cur[cell-Dungeon.level.width()];
+							count++;
+						}
+						if (i < area.bottom && !blocking[cell+Dungeon.level.width()]) {
+							sum += cur[cell+Dungeon.level.width()];
+							count++;
+						}
+
+						int value = sum >= count ? (sum / count) - 1 : 0;
+						off[cell] = value;
+
+						if (value > 0){
+							if (i < area.top)
+								area.top = i;
+							else if (i >= area.bottom)
+								area.bottom = i+1;
+							if (j < area.left)
+								area.left = j;
+							else if (j >= area.right)
+								area.right = j+1;
+						}
+
+						volume += value;
+					} else {
+						off[cell] = 0;
 					}
-					
-					volume += value;
-				} else {
-					off[cell] = 0;
 				}
 			}
 		}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java
index c95ada2d0..150dfe38a 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java
@@ -1001,12 +1001,10 @@ public abstract class Level implements Bundlable {
 
 	//returns true if the input is a valid tile within the level
 	public boolean insideMap( int tile ){
-				//outside map array
-		return !((tile < 0 || tile >= length()) ||
-				//top and bottom row
-				 (tile < width() || tile >= length() - width()) ||
+				//top and bottom row and beyond
+		return !((tile < width || tile >= length - width) ||
 				//left and right column
-				(tile % width() == 0 || tile % width() == width()-1));
+				(tile % width == 0 || tile % width == width-1));
 	}
 
 	public Point cellToPoint( int cell ){