diff --git a/examplemods/mobnpcspawner.js b/examplemods/mobnpcspawner.js
index b16caff..e46ea77 100644
--- a/examplemods/mobnpcspawner.js
+++ b/examplemods/mobnpcspawner.js
@@ -1,6 +1,8 @@
 (() => {
     PluginAPI.dedicatedServer.appendCode(function () {
         PluginAPI.addEventListener("processcommand", (event) => {
+            // Check if the sender is a player
+            if (!ModAPI.reflect.getClassById("net.minecraft.entity.player.EntityPlayerMP").instanceOf(event.sender.getRef())) { return; }
 
             // Check if the command is "/spawnnpc"
             if (event.command.toLowerCase().startsWith("/spawnnpc")) {
@@ -9,7 +11,7 @@
 
                 // Create a sheep entity
                 const EntitySheepClass = ModAPI.reflect.getClassById("net.minecraft.entity.passive.EntitySheep");
-                const sheep = EntitySheepClass.constructors[1](world.getRef());
+                const sheep = EntitySheepClass.constructors[0](world.getRef());
 
                 // Set sheep's position to player's position
                 sheep.setPosition(senderPos.getX(), senderPos.getY(), senderPos.getZ());