diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/SandalsOfNature.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/SandalsOfNature.java
index 811b09aa0..09b200b51 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/SandalsOfNature.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/SandalsOfNature.java
@@ -65,7 +65,6 @@ import com.watabou.utils.Random;
 import com.watabou.utils.Reflection;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
 
 public class SandalsOfNature extends Artifact {
@@ -256,8 +255,11 @@ public class SandalsOfNature extends Artifact {
 	@Override
 	public void restoreFromBundle( Bundle bundle ) {
 		super.restoreFromBundle(bundle);
+		seeds.clear();
 		if (bundle.contains(SEEDS) && bundle.getClassArray(SEEDS) != null) {
-			Collections.addAll(seeds, bundle.getClassArray(SEEDS));
+			for (Class<?> seed : bundle.getClassArray(SEEDS)) {
+				if (seed != null) seeds.add(seed);
+			}
 		}
 		curSeedEffect = bundle.getClass(CUR_SEED_EFFECT);
 
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/UnstableSpellbook.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/UnstableSpellbook.java
index 8f7fcdf5e..0afa42419 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/UnstableSpellbook.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/UnstableSpellbook.java
@@ -61,7 +61,6 @@ import com.watabou.utils.Random;
 import com.watabou.utils.Reflection;
 
 import java.util.ArrayList;
-import java.util.Collections;
 
 public class UnstableSpellbook extends Artifact {
 
@@ -330,8 +329,10 @@ public class UnstableSpellbook extends Artifact {
 	public void restoreFromBundle( Bundle bundle ) {
 		super.restoreFromBundle(bundle);
 		scrolls.clear();
-		if (bundle.contains(SCROLLS)) {
-			Collections.addAll(scrolls, bundle.getClassArray(SCROLLS));
+		if (bundle.contains(SCROLLS) && bundle.getClassArray(SCROLLS) != null) {
+			for (Class<?> scroll : bundle.getClassArray(SCROLLS)) {
+				if (scroll != null) scrolls.add(scroll);
+			}
 		}
 	}