diff --git a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/SetCustomStackingHeightEvent.java b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/SetCustomStackingHeightEvent.java
index 55fd0f44..e0143630 100644
--- a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/SetCustomStackingHeightEvent.java
+++ b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/SetCustomStackingHeightEvent.java
@@ -34,7 +34,7 @@ public class SetCustomStackingHeightEvent extends MessageHandler {
                         }
                     }
                 } else {
-                    stackerHeight = Math.min(Math.max(stackerHeight, itemTile.z * 100), Room.MAXIMUM_FURNI_HEIGHT * 100);
+                    stackerHeight = Math.min(Math.max(stackerHeight, (long) itemTile.z * 100), Room.MAXIMUM_FURNI_HEIGHT * 100);
                 }
 
                 double height = 0;
diff --git a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/ControlYoutubeDisplayPlaybackEvent.java b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/ControlYoutubeDisplayPlaybackEvent.java
index 7af486a2..6c5bac12 100644
--- a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/ControlYoutubeDisplayPlaybackEvent.java
+++ b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/ControlYoutubeDisplayPlaybackEvent.java
@@ -18,7 +18,7 @@ public class ControlYoutubeDisplayPlaybackEvent extends MessageHandler {
         PAUSE(2),
         RESUME(3);
 
-        private int state;
+        private final int state;
 
         YoutubeState(int state) {
             this.state = state;
@@ -80,7 +80,7 @@ public class ControlYoutubeDisplayPlaybackEvent extends MessageHandler {
             case RESUME:
                 tv.playing = true;
                 tv.startedWatchingAt = Emulator.getIntUnixTimestamp();
-                tv.autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo(tv), (tv.currentVideo.getDuration() - tv.offset) * 1000);
+                tv.autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo(tv), (tv.currentVideo.getDuration() - tv.offset) * 1000L);
                 room.sendComposer(new YoutubeControlVideoMessageComposer(tv.getId(), 1).compose());
                 break;
             case PREVIOUS:
@@ -99,7 +99,7 @@ public class ControlYoutubeDisplayPlaybackEvent extends MessageHandler {
             room.sendComposer(new YoutubeDisplayVideoMessageComposer(tv.getId(), tv.currentVideo, true, 0).compose());
 
             tv.cancelAdvancement();
-            tv.autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo(tv), tv.currentVideo.getDuration() * 1000);
+            tv.autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo(tv), tv.currentVideo.getDuration() * 1000L);
             tv.startedWatchingAt = Emulator.getIntUnixTimestamp();
             tv.offset = 0;
             tv.playing = true;
diff --git a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/SetYoutubeDisplayPlaylistEvent.java b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/SetYoutubeDisplayPlaylistEvent.java
index 5d0c92d5..b509ec47 100644
--- a/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/SetYoutubeDisplayPlaylistEvent.java
+++ b/src/main/java/com/eu/habbo/messages/incoming/rooms/items/youtube/SetYoutubeDisplayPlaylistEvent.java
@@ -32,7 +32,7 @@ public class SetYoutubeDisplayPlaylistEvent extends MessageHandler {
 
         HabboItem item = this.client.getHabbo().getHabboInfo().getCurrentRoom().getHabboItem(itemId);
 
-        if (item == null || !(item instanceof  InteractionYoutubeTV)) return;
+        if (!(item instanceof InteractionYoutubeTV)) return;
 
         Optional<YoutubeManager.YoutubePlaylist> playlist = Emulator.getGameEnvironment().getItemManager().getYoutubeManager().getPlaylistsForItemId(item.getBaseItem().getId()).stream().filter(p -> p.getId().equals(playlistId)).findAny();
 
@@ -47,7 +47,7 @@ public class SetYoutubeDisplayPlaylistEvent extends MessageHandler {
 
             room.updateItem(item);
             room.sendComposer(new YoutubeDisplayVideoMessageComposer(itemId, video, true, 0).compose());
-            ((InteractionYoutubeTV) item).autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo((InteractionYoutubeTV) item), video.getDuration() * 1000);
+            ((InteractionYoutubeTV) item).autoAdvance = Emulator.getThreading().run(new YoutubeAdvanceVideo((InteractionYoutubeTV) item), video.getDuration() * 1000L);
 
             item.needsUpdate(true);
         }