diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java b/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
index 485023787..251694c32 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java
@@ -150,13 +150,9 @@ import java.util.UUID;
 import java.util.concurrent.ThreadLocalRandom;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-
 /**
  * An {@link Extent} that handles history, {@link BlockBag}s, change limits,
  * block re-ordering, and much more. Most operations in WorldEdit use this class.
@@ -170,6 +166,12 @@ public class EditSession extends AbstractDelegateExtent implements SimpleWorld,
 
     private static final Logger log = LoggerFactory.getLogger(EditSession.class);
 
+    //TODO
+    @Override
+    public String getId() {
+        return null;
+    }
+
     /**
      * Used by {@link EditSession#setBlock(BlockVector3, BlockStateHolder, Stage)} to
      * determine which {@link Extent}s should be bypassed.
@@ -1193,10 +1195,10 @@ public class EditSession extends AbstractDelegateExtent implements SimpleWorld,
     /**
      * Fills an area recursively in the X/Z directions.
      *
-     * @param origin    the location to start from
-     * @param pattern     the block to fill with
-     * @param radius    the radius of the spherical area to fill
-     * @param depth     the maximum depth, starting from the origin
+     * @param origin the location to start from
+     * @param pattern the block to fill with
+     * @param radius the radius of the spherical area to fill
+     * @param depth the maximum depth, starting from the origin
      * @param direction the direction to fill
      * @return number of blocks affected
      * @throws MaxChangedBlocksException thrown if too many blocks are changed
@@ -2971,7 +2973,7 @@ public class EditSession extends AbstractDelegateExtent implements SimpleWorld,
                 double scaledZ = (z - zero2D.getZ()) / unit2D.getZ();
 
                 try {
-                    if (expression.evaluateTimeout(timeout, scaledX, scaledZ, timeout) <= 0) {
+                    if (expression.evaluate(new double[]{scaledX, scaledZ}, timeout) <= 0) {
                         return null;
                     }
 
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BlockPattern.java b/worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BlockPattern.java
index 6ad68f5f9..118492bde 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BlockPattern.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/function/pattern/BlockPattern.java
@@ -21,13 +21,14 @@ package com.sk89q.worldedit.function.pattern;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
-import com.boydti.fawe.beta.FilterBlock;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
 /**
  * A pattern that returns the same {@link BaseBlock} each time.
+ *
+ * @deprecated all BlockStateHolders can be used directly as a pattern
  */
 @Deprecated
 public class BlockPattern extends AbstractPattern {
@@ -39,7 +40,6 @@ public class BlockPattern extends AbstractPattern {
      *
      * @param block the block
      */
-    @Deprecated
     public BlockPattern(BlockStateHolder<?> block) {
         setBlock(block);
     }
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BaseBlock.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BaseBlock.java
index 80ed33065..f6ed36737 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BaseBlock.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BaseBlock.java
@@ -182,7 +182,7 @@ public class BaseBlock implements BlockStateHolder<BaseBlock>, TileEntityBlock {
 
     @Override
     public void setNbtData(@Nullable CompoundTag nbtData) {
-        throw new UnsupportedOperationException("Immutable");
+        throw new UnsupportedOperationException("This class is immutable.");
     }
 
     /**
@@ -239,7 +239,7 @@ public class BaseBlock implements BlockStateHolder<BaseBlock>, TileEntityBlock {
     }
 
     @Override
-    public final BaseBlock toBaseBlock() {
+    public BaseBlock toBaseBlock() {
         return this;
     }
 
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockState.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockState.java
index 07599940a..a0187ac4f 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockState.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockState.java
@@ -301,6 +301,9 @@ public class BlockState implements BlockStateHolder<BlockState>, FawePattern {
 
     @Override
     public boolean equalsFuzzy(BlockStateHolder<?> o) {
+        if (null == o) {
+            return false;
+        }
         if (this == o) {
             // Added a reference equality check for speediness
             return true;
@@ -308,9 +311,6 @@ public class BlockState implements BlockStateHolder<BlockState>, FawePattern {
         if (o.getClass() == BlockState.class) {
             return o.getOrdinal() == this.getOrdinal();
         }
-        if (null == o) {
-            return false;
-        }
         return o.equalsFuzzy(this);
     }