diff --git a/src/main/js/plugins/minigames/SnowballFight.js b/src/main/js/plugins/minigames/SnowballFight.js
index b72913f..9dccae6 100644
--- a/src/main/js/plugins/minigames/SnowballFight.js
+++ b/src/main/js/plugins/minigames/SnowballFight.js
@@ -139,7 +139,7 @@ var _getTeam = function( player, pteams ) {
 var createGame = function( duration, teams ) {
   var players,
     i,
-    _snowBalls = new ItemStack( Material.SNOW_BALL, 64 );
+    _snowBalls = new bkItemStack( bkMaterial.SNOW_BALL, 64 );
 
   var _gameState = {
     teams: teams,
@@ -179,7 +179,7 @@ var createGame = function( duration, teams ) {
    */
   var _onSnowballHit = function( l, event ) {
     var snowball = event.damager;
-    if ( !snowball || !( snowball instanceof Snowball ) ) {
+    if ( !snowball || !( snowball instanceof bkSnowball ) ) {
       return;
     }
     var throwersTeam = _getTeam( snowball.shooter, _gameState.teams );
diff --git a/src/main/js/plugins/spawn.js b/src/main/js/plugins/spawn.js
index 30803c3..1cfd566 100644
--- a/src/main/js/plugins/spawn.js
+++ b/src/main/js/plugins/spawn.js
@@ -37,5 +37,5 @@ command( 'spawn', function( parameters, sender ) {
   }
   var world = location.world;
   var type = ('' + parameters[0]).toUpperCase();
-  world.spawnEntity( location, EntityType[type] );
+  world.spawnEntity( location, bkEntityType[type] );
 }, entities );