diff --git a/src/api/java/baritone/api/Settings.java b/src/api/java/baritone/api/Settings.java
index 1bbde3b2..283e4e0a 100644
--- a/src/api/java/baritone/api/Settings.java
+++ b/src/api/java/baritone/api/Settings.java
@@ -30,8 +30,8 @@ import java.awt.*;
 import java.lang.reflect.Field;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
-import java.util.*;
 import java.util.List;
+import java.util.*;
 import java.util.function.Consumer;
 
 /**
@@ -193,6 +193,15 @@ public final class Settings {
 
     )));
 
+    /**
+     * A list of blocks to become air
+     * <p>
+     * If a schematic asks for a block on this list, only air will be accepted at that location (and nothing on buildIgnoreBlocks)
+     */
+    public final Setting<List<Block>> okIfAir = new Setting<>(new ArrayList<>(Arrays.asList(
+
+    )));
+
     /**
      * If this is true, the builder will treat all non-air blocks as correct. It will only place new blocks.
      */
diff --git a/src/main/java/baritone/process/BuilderProcess.java b/src/main/java/baritone/process/BuilderProcess.java
index 17a8f5f9..b8f77ce2 100644
--- a/src/main/java/baritone/process/BuilderProcess.java
+++ b/src/main/java/baritone/process/BuilderProcess.java
@@ -206,6 +206,7 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
                         continue; // irrelevant
                     }
                     IBlockState curr = bcc.bsi.get0(x, y, z);
+                    Blocks.ICE;
                     if (curr.getBlock() != Blocks.AIR && !(curr.getBlock() instanceof BlockLiquid) && !valid(curr, desired, false)) {
                         BetterBlockPos pos = new BetterBlockPos(x, y, z);
                         Optional<Rotation> rot = RotationUtils.reachable(ctx.player(), pos, ctx.playerController().getBlockReachDistance());
@@ -773,10 +774,12 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
         if (desired == null) {
             return true;
         }
-        // TODO more complicated comparison logic I guess
         if (current.getBlock() instanceof BlockLiquid && Baritone.settings().okIfWater.value) {
             return true;
         }
+        if (current.getBlock() instanceof BlockAir && Baritone.settings().okIfAir.value.contains(desired.getBlock())) {
+            return true;
+        }
         if (desired.getBlock() instanceof BlockAir && Baritone.settings().buildIgnoreBlocks.value.contains(current.getBlock())) {
             return true;
         }