diff --git a/pom.xml b/pom.xml
index 870e3b41..bba281e2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,7 +76,7 @@
     <dependency>
       <groupId>org.khelekore</groupId>
       <artifactId>prtree</artifactId>
-      <version>1.4</version>
+      <version>1.5</version>
       <scope>compile</scope>
     </dependency>
     <dependency>
diff --git a/src/main/java/com/sk89q/worldguard/protection/GlobalRegionManager.java b/src/main/java/com/sk89q/worldguard/protection/GlobalRegionManager.java
index decd7821..94119464 100644
--- a/src/main/java/com/sk89q/worldguard/protection/GlobalRegionManager.java
+++ b/src/main/java/com/sk89q/worldguard/protection/GlobalRegionManager.java
@@ -42,6 +42,7 @@
 import com.sk89q.worldguard.protection.databases.MySQLDatabase;
 import com.sk89q.worldguard.protection.flags.StateFlag;
 import com.sk89q.worldguard.protection.managers.FlatRegionManager;
+import com.sk89q.worldguard.protection.managers.PRTreeRegionManager;
 import com.sk89q.worldguard.protection.managers.RegionManager;
 
 /**
@@ -156,7 +157,7 @@ public RegionManager create(World world) {
             }
 
             // Create a manager
-            RegionManager manager = new FlatRegionManager(database);
+            RegionManager manager = new PRTreeRegionManager(database);
             manager.load();
 
             plugin.getLogger().info(manager.getRegions().size()
diff --git a/src/main/java/com/sk89q/worldguard/protection/managers/PRTreeRegionManager.java b/src/main/java/com/sk89q/worldguard/protection/managers/PRTreeRegionManager.java
index 7efc09ec..fe1c3736 100644
--- a/src/main/java/com/sk89q/worldguard/protection/managers/PRTreeRegionManager.java
+++ b/src/main/java/com/sk89q/worldguard/protection/managers/PRTreeRegionManager.java
@@ -24,8 +24,10 @@
 import java.util.Map;
 import java.util.TreeMap;
 
+import org.khelekore.prtree.MBR;
 import org.khelekore.prtree.MBRConverter;
 import org.khelekore.prtree.PRTree;
+import org.khelekore.prtree.SimpleMBR;
 
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldguard.LocalPlayer;
@@ -115,11 +117,9 @@ public void removeRegion(String id) {
     public ApplicableRegionSet getApplicableRegions(Vector pt) {
         List<ProtectedRegion> appRegions =
                 new ArrayList<ProtectedRegion>();
+        MBR pointMBR = new SimpleMBR(pt.getX(), pt.getX(), pt.getY(), pt.getY(), pt.getZ(), pt.getZ());
 
-        int x = pt.getBlockX();
-        int z = pt.getBlockZ();
-
-        for (ProtectedRegion region : tree.find(x, z, x, z)) {
+        for (ProtectedRegion region : tree.find(pointMBR)) {
             if (region.contains(pt)) {
                 appRegions.add(region);
             }
@@ -148,11 +148,9 @@ public ApplicableRegionSet getApplicableRegions(ProtectedRegion checkRegion) {
     @Override
     public List<String> getApplicableRegionsIDs(Vector pt) {
         List<String> applicable = new ArrayList<String>();
+        MBR pointMBR = new SimpleMBR(pt.getX(), pt.getX(), pt.getY(), pt.getY(), pt.getZ(), pt.getZ());
 
-        int x = pt.getBlockX();
-        int z = pt.getBlockZ();
-
-        for (ProtectedRegion region : tree.find(x, z, x, z)) {
+        for (ProtectedRegion region : tree.find(pointMBR)) {
             if (region.contains(pt)) {
                 applicable.add(region.getId());
             }
diff --git a/src/main/java/com/sk89q/worldguard/protection/regions/ProtectedRegionMBRConverter.java b/src/main/java/com/sk89q/worldguard/protection/regions/ProtectedRegionMBRConverter.java
index 83606f22..b56c76a5 100644
--- a/src/main/java/com/sk89q/worldguard/protection/regions/ProtectedRegionMBRConverter.java
+++ b/src/main/java/com/sk89q/worldguard/protection/regions/ProtectedRegionMBRConverter.java
@@ -22,19 +22,35 @@
 import org.khelekore.prtree.MBRConverter;
 
 public class ProtectedRegionMBRConverter implements MBRConverter<ProtectedRegion> {
-    public double getMinX(ProtectedRegion t) {
-        return t.getMinimumPoint().getBlockX();
+
+    @Override
+    public int getDimensions() {
+        return 3;
     }
 
-    public double getMinY(ProtectedRegion t) {
-        return t.getMinimumPoint().getBlockZ();
+    @Override
+    public double getMax(int dimension, ProtectedRegion region) {
+        switch (dimension) {
+            case 0:
+                return region.getMaximumPoint().getBlockX();
+            case 1:
+                return region.getMaximumPoint().getBlockY();
+            case 2:
+                return region.getMaximumPoint().getBlockZ();
+        }
+        return 0;
     }
 
-    public double getMaxX(ProtectedRegion t) {
-        return t.getMaximumPoint().getBlockX();
-    }
-
-    public double getMaxY(ProtectedRegion t) {
-        return t.getMaximumPoint().getBlockZ();
+    @Override
+    public double getMin(int dimension, ProtectedRegion region) {
+        switch (dimension) {
+            case 0:
+                return region.getMinimumPoint().getBlockX();
+            case 1:
+                return region.getMinimumPoint().getBlockY();
+            case 2:
+                return region.getMinimumPoint().getBlockZ();
+        }
+        return 0;
     }
 }