diff --git a/src/main/java/land/chipmunk/chipmunkmod/modules/CommandCore.java b/src/main/java/land/chipmunk/chipmunkmod/modules/CommandCore.java
index ce482ad..9befc58 100644
--- a/src/main/java/land/chipmunk/chipmunkmod/modules/CommandCore.java
+++ b/src/main/java/land/chipmunk/chipmunkmod/modules/CommandCore.java
@@ -20,8 +20,6 @@ import net.minecraft.client.network.ClientPlayerEntity;
 import net.minecraft.client.network.ClientPlayerInteractionManager;
 import net.minecraft.client.network.PendingUpdateManager;
 import net.minecraft.client.world.ClientWorld;
-import net.minecraft.command.permission.LeveledPermissionPredicate;
-import net.minecraft.command.permission.PermissionLevel;
 import net.minecraft.component.ComponentMap;
 import net.minecraft.component.DataComponentTypes;
 import net.minecraft.component.type.NbtComponent;
@@ -452,6 +450,10 @@ public class CommandCore implements Listener {
         final BlockState oldBlockState = pair.getRight();
 
         final int freeHotBarSlot = player.getInventory().getEmptySlot();
+        if (freeHotBarSlot == -1 || freeHotBarSlot > 8) {
+            if (fallbackToChat) networkHandler.sendChatCommand(command);
+            return null;
+        }
         final int slot = 36 + freeHotBarSlot;
 
         final int oldSelectedSlot = player.getInventory().getSelectedSlot();