diff --git a/src/main/java/ellpeck/actuallyadditions/event/EntityConstructingEvent.java b/src/main/java/ellpeck/actuallyadditions/event/EntityConstructingEvent.java
index b6a65afe8..42b6cfa8f 100644
--- a/src/main/java/ellpeck/actuallyadditions/event/EntityConstructingEvent.java
+++ b/src/main/java/ellpeck/actuallyadditions/event/EntityConstructingEvent.java
@@ -20,7 +20,7 @@ public class EntityConstructingEvent{
 
     @SubscribeEvent
     public void onEntityConstructing(EntityEvent.EntityConstructing event){
-        if(event.entity instanceof EntityPlayer){
+        if(event.entity instanceof EntityPlayer && !event.entity.worldObj.isRemote){
             if(PersistentServerData.get((EntityPlayer)event.entity) == null){
                 event.entity.registerExtendedProperties(ModUtil.MOD_ID, new PersistentServerData());
             }
diff --git a/src/main/java/ellpeck/actuallyadditions/util/playerdata/PersistentServerData.java b/src/main/java/ellpeck/actuallyadditions/util/playerdata/PersistentServerData.java
index e8d48a82a..c7cd58aa6 100644
--- a/src/main/java/ellpeck/actuallyadditions/util/playerdata/PersistentServerData.java
+++ b/src/main/java/ellpeck/actuallyadditions/util/playerdata/PersistentServerData.java
@@ -34,7 +34,7 @@ public class PersistentServerData implements IExtendedEntityProperties{
     public void saveNBTData(NBTTagCompound aComp){
         NBTTagCompound compound = new NBTTagCompound();
 
-        compound.setBoolean("BookGotten", bookGottenAlready);
+        compound.setBoolean("BookGotten", this.bookGottenAlready);
 
         aComp.setTag(ModUtil.MOD_ID, compound);
     }