diff --git a/src/me/aleksilassila/islands/generation/IslandGeneration.java b/src/me/aleksilassila/islands/generation/IslandGeneration.java
index 9801c88..51963fc 100644
--- a/src/me/aleksilassila/islands/generation/IslandGeneration.java
+++ b/src/me/aleksilassila/islands/generation/IslandGeneration.java
@@ -239,7 +239,7 @@ public boolean isBlockInIslandSphere(int x, int y, int z, int islandSize) {
                 <= Math.pow(islandSize / 2.0, 2);
     }
 
-    public boolean isBlockInIslandCircle(int relativeX, int relativeZ, int islandSize) {
+    public boolean isBlockInIslandCylinder(int relativeX, int relativeZ, int islandSize) {
         return (Math.pow(relativeX - islandSize / 2.0, 2) + Math.pow(relativeZ - islandSize / 2.0, 2))
                 <= Math.pow(islandSize / 2.0, 2);
     }
diff --git a/src/me/aleksilassila/islands/generation/IslandGrid.java b/src/me/aleksilassila/islands/generation/IslandGrid.java
index 5d47a72..4add754 100644
--- a/src/me/aleksilassila/islands/generation/IslandGrid.java
+++ b/src/me/aleksilassila/islands/generation/IslandGrid.java
@@ -244,7 +244,7 @@ public String getBlockOwnerUUID(int x, int z) {
         int relativeX = x - (xIndex * islandSpacing + islandSpacing / 2 - islandSize / 2);
         int relativeZ = z - (zIndex * islandSpacing + islandSpacing / 2 - islandSize / 2);
 
-        boolean isInside = islands.islandGeneration.isBlockInIslandCircle(relativeX, relativeZ, islandSize);
+        boolean isInside = islands.islandGeneration.isBlockInIslandCylinder(relativeX + 2, relativeZ + 2, islandSize + 4);
 
         if (!isInside) return null;
 
diff --git a/src/me/aleksilassila/islands/listeners/IslandsListener.java b/src/me/aleksilassila/islands/listeners/IslandsListener.java
index 128b808..6792b58 100644
--- a/src/me/aleksilassila/islands/listeners/IslandsListener.java
+++ b/src/me/aleksilassila/islands/listeners/IslandsListener.java
@@ -1,6 +1,7 @@
 package me.aleksilassila.islands.listeners;
 
 import me.aleksilassila.islands.Main;
+import me.aleksilassila.islands.utils.Messages;
 import me.aleksilassila.islands.utils.Permissions;
 import me.aleksilassila.islands.utils.ChatUtils;
 import org.bukkit.ChatColor;
@@ -128,7 +129,7 @@ public void onEntityDamageEvent(EntityDamageByEntityEvent e) {
 
                  e.setCancelled(true);
 
-                 e.getDamager().sendMessage(error("You cannot interact here."));
+                 e.getDamager().sendMessage(Messages.error.NOT_TRUSTED);
             }
         }
     }
@@ -151,7 +152,7 @@ public void onPlayerInteract(PlayerInteractEvent e) {
 
                 e.setCancelled(true);
 
-                e.getPlayer().sendMessage(error("You cannot interact here."));
+                e.getPlayer().sendMessage(Messages.error.NOT_TRUSTED);
             }
         }
     }
@@ -161,6 +162,7 @@ public void onPlayerInteract(PlayerInteractEvent e) {
     private void onBlockPlace(BlockPlaceEvent e) {
         if (e.isCancelled()) return;
         if (e.getPlayer().hasPermission(Permissions.bypass.interactEverywhere)) return;
+
         if (e.getBlock().getWorld().equals(plugin.islandsWorld)) {
             int x = e.getBlock().getX();
             int z = e.getBlock().getZ();
@@ -174,8 +176,9 @@ private void onBlockPlace(BlockPlaceEvent e) {
 
                 e.setCancelled(true);
 
-                e.getPlayer().sendMessage(error("You cannot interact here."));
+                if (ownerUUID != null) e.getPlayer().sendMessage(Messages.error.NOT_TRUSTED);
             }
+
         }
     }
 }
diff --git a/src/me/aleksilassila/islands/utils/Messages.java b/src/me/aleksilassila/islands/utils/Messages.java
index 17aa183..66521f9 100644
--- a/src/me/aleksilassila/islands/utils/Messages.java
+++ b/src/me/aleksilassila/islands/utils/Messages.java
@@ -23,6 +23,7 @@ public static class error {
             public static final String NO_LOCATIONS_FOR_BIOME = error("No available locations for specified biome.");
             public static final String ISLAND_NOT_FOUND = error("404 - Home not found.");
             public static final String HOME_NOT_FOUND = error("404 - Home not found :(");
+            public static final String NOT_TRUSTED = error("You need owner's permission to interact here.");
 
             public static String COOLDOWN(int remainingTime) {
                 return error("You took damage recently. You have to wait for " + remainingTime + "s before teleporting.");