diff --git a/src/main/java/world/bentobox/bentobox/listeners/NetherPortals.java b/src/main/java/world/bentobox/bentobox/listeners/NetherPortals.java
index fbbf6090b..49df94e08 100644
--- a/src/main/java/world/bentobox/bentobox/listeners/NetherPortals.java
+++ b/src/main/java/world/bentobox/bentobox/listeners/NetherPortals.java
@@ -175,7 +175,7 @@ public class NetherPortals implements Listener {
     public void onNetherPortalStandardNether(PlayerPortalEvent e) {
         World fromWorld = e.getFrom().getWorld();
         if (e.getCause().equals(TeleportCause.NETHER_PORTAL)
-                && plugin.getIWM().inWorld(e.getFrom())
+                && plugin.getIWM().inWorld(Util.getWorld(fromWorld))
                 && !plugin.getIWM().isNetherIslands(fromWorld)
                 && fromWorld.getEnvironment().equals(Environment.NETHER)
                 && plugin.getPlayers().isKnown(e.getPlayer().getUniqueId())) {
diff --git a/src/main/java/world/bentobox/bentobox/managers/IslandWorldManager.java b/src/main/java/world/bentobox/bentobox/managers/IslandWorldManager.java
index 23c240910..ea6d3cf6f 100644
--- a/src/main/java/world/bentobox/bentobox/managers/IslandWorldManager.java
+++ b/src/main/java/world/bentobox/bentobox/managers/IslandWorldManager.java
@@ -65,11 +65,11 @@ public class IslandWorldManager {
     }
 
     /**
-     * Checks if a location is in any of the island worlds
+     * Checks if a location is in any of the island worlds.
+     * This will be false if the player is in the standard Nether or standard End.
      *
-     * @param loc
-     *            - location
-     * @return true if in a world or false if not
+     * @param loc - location
+     * @return true if in a world or false if not. False if in standard Nether or standard End.
      */
     public boolean inWorld(Location loc) {
         return inWorld(loc.getWorld());