diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
index 1d797ad45..ea67d810c 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Piranha.java
@@ -60,7 +60,8 @@ public class Piranha extends Mob {
 			//this causes pirahna to move away when a door is closed on them.
 			Dungeon.level.updateFieldOfView( this );
 			enemy = chooseEnemy();
-			if (state == this.HUNTING && !(enemy.isAlive() && Level.fieldOfView[enemy.pos] && enemy.invisible <= 0)){
+			if (state == this.HUNTING &&
+					!(enemy != null && enemy.isAlive() && Level.fieldOfView[enemy.pos] && enemy.invisible <= 0)){
 				state = this.WANDERING;
 				int oldPos = pos;
 				int i = 0;
diff --git a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/npcs/Ghost.java b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/npcs/Ghost.java
index 24f335d51..684596aee 100644
--- a/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/npcs/Ghost.java
+++ b/src/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/npcs/Ghost.java
@@ -499,7 +499,7 @@ public class Ghost extends NPC {
         @Override
         protected boolean getCloser( int target ) {
             combo = 0; //if he's moving, he isn't attacking, reset combo.
-            if (Level.adjacent(pos, enemy.pos)) {
+            if (enemy != null && Level.adjacent(pos, enemy.pos)) {
                 return getFurther( target );
             } else {
                 return super.getCloser( target );