diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Necromancer.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Necromancer.java
index 674554b69..c58e35cc8 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Necromancer.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Necromancer.java
@@ -37,6 +37,7 @@ import com.shatteredpixel.shatteredpixeldungeon.items.scrolls.ScrollOfTeleportat
 import com.shatteredpixel.shatteredpixeldungeon.scenes.GameScene;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.NecromancerSprite;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.SkeletonSprite;
+import com.shatteredpixel.shatteredpixeldungeon.utils.BArray;
 import com.watabou.utils.Bundle;
 import com.watabou.utils.PathFinder;
 import com.watabou.utils.Random;
@@ -263,8 +264,13 @@ public class Necromancer extends Mob {
 			if (enemySeen && Dungeon.level.distance(pos, enemy.pos) <= 4 && mySkeleton == null){
 				
 				summoningPos = -1;
+
+				//we can summon around blocking terrain, but not through it
+				PathFinder.buildDistanceMap(pos, BArray.not(Dungeon.level.solid, null), Dungeon.level.distance(pos, enemy.pos)+3);
+
 				for (int c : PathFinder.NEIGHBOURS8){
 					if (Actor.findChar(enemy.pos+c) == null
+							&& PathFinder.distance[enemy.pos+c] != Integer.MAX_VALUE
 							&& Dungeon.level.passable[enemy.pos+c]
 							&& fieldOfView[enemy.pos+c]
 							&& Dungeon.level.trueDistance(pos, enemy.pos+c) < Dungeon.level.trueDistance(pos, summoningPos)){