diff --git a/projects/common/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java b/projects/common/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
index 5f7ceddfc..3b9363bb6 100644
--- a/projects/common/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
@@ -37,9 +37,9 @@ import org.jspecify.annotations.Nullable;
 
 public class TurtlePlaceCommand implements TurtleCommand {
     private final InteractDirection direction;
-    private final Object[] extraArguments;
+    private final @Nullable Object[] extraArguments;
 
-    public TurtlePlaceCommand(InteractDirection direction, Object[] arguments) {
+    public TurtlePlaceCommand(InteractDirection direction, @Nullable Object[] arguments) {
         this.direction = direction;
         extraArguments = arguments;
     }
@@ -177,7 +177,7 @@ public class TurtlePlaceCommand implements TurtleCommand {
         var placed = doDeployOnBlock(stack, turtlePlayer, hit, adjacent).consumesAction();
 
         // Set text on signs
-        if (placed && item instanceof SignItem && extraArguments != null && extraArguments.length >= 1 && extraArguments[0] instanceof String message) {
+        if (placed && item instanceof SignItem && extraArguments.length >= 1 && extraArguments[0] instanceof String message) {
             var world = turtle.getLevel();
             var tile = world.getBlockEntity(position);
             if (tile == null || tile == existingTile) {
diff --git a/projects/core-api/src/main/java/dan200/computercraft/api/lua/IArguments.java b/projects/core-api/src/main/java/dan200/computercraft/api/lua/IArguments.java
index f554b05e5..9d5eb1b80 100644
--- a/projects/core-api/src/main/java/dan200/computercraft/api/lua/IArguments.java
+++ b/projects/core-api/src/main/java/dan200/computercraft/api/lua/IArguments.java
@@ -73,7 +73,7 @@ public interface IArguments {
      * @throws LuaException If an error occurred while fetching an argument.
      * @see #get(int) To get a single argument.
      */
-    default Object[] getAll() throws LuaException {
+    default @Nullable Object[] getAll() throws LuaException {
         var result = new Object[count()];
         for (var i = 0; i < result.length; i++) result[i] = get(i);
         return result;