diff --git a/src/main/java/baritone/chunk/ChunkPacker.java b/src/main/java/baritone/chunk/ChunkPacker.java
index 90cdf02a7..239083448 100644
--- a/src/main/java/baritone/chunk/ChunkPacker.java
+++ b/src/main/java/baritone/chunk/ChunkPacker.java
@@ -21,7 +21,6 @@ import baritone.pathing.movement.MovementHelper;
 import baritone.utils.Helper;
 import baritone.utils.pathing.PathingBlockType;
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockAir;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.init.Blocks;
 import net.minecraft.util.ResourceLocation;
@@ -114,7 +113,7 @@ public final class ChunkPacker implements Helper {
         // however, this failed in the nether when you were near a nether fortress
         // because fences check their adjacent blocks in the world for their fence connection status to determine AABB shape
         // this caused a nullpointerexception when we saved chunks on unload, because they were unable to check their neighbors
-        if (block instanceof BlockAir) {
+        if (block == Blocks.AIR) {
             return PathingBlockType.AIR;
         }