diff --git a/BlueMapAPI b/BlueMapAPI
index 17cbf15f..ea8d2379 160000
--- a/BlueMapAPI
+++ b/BlueMapAPI
@@ -1 +1 @@
-Subproject commit 17cbf15f84815205b52a7aa07f4060b4235cf45a
+Subproject commit ea8d237925e4efb1e1fb17d9ec622ea9aa80b43c
diff --git a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerImpl.java b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerImpl.java
index 798ff77b..0222ae68 100644
--- a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerImpl.java
+++ b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerImpl.java
@@ -24,16 +24,16 @@
  */
 package de.bluecolored.bluemap.common.api.marker;
 
-import java.util.Optional;
-
 import com.flowpowered.math.vector.Vector3d;
 import com.google.common.base.Preconditions;
-
 import de.bluecolored.bluemap.api.BlueMapAPI;
 import de.bluecolored.bluemap.api.BlueMapMap;
 import de.bluecolored.bluemap.api.marker.Marker;
 import ninja.leaping.configurate.ConfigurationNode;
 
+import java.util.Objects;
+import java.util.Optional;
+
 public abstract class MarkerImpl implements Marker {
 
 	private final String id;
@@ -205,5 +205,18 @@ private static void writePos(ConfigurationNode node, Vector3d pos) {
 		node.getNode("y").setValue(Math.round(pos.getY() * 1000d) / 1000d);
 		node.getNode("z").setValue(Math.round(pos.getZ() * 1000d) / 1000d);
 	}
-	
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) return true;
+		if (o == null || getClass() != o.getClass()) return false;
+		MarkerImpl marker = (MarkerImpl) o;
+		return id.equals(marker.id);
+	}
+
+	@Override
+	public int hashCode() {
+		return id.hashCode();
+	}
+
 }
diff --git a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerSetImpl.java b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerSetImpl.java
index 59ace780..518facd5 100644
--- a/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerSetImpl.java
+++ b/BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/api/marker/MarkerSetImpl.java
@@ -24,17 +24,8 @@
  */
 package de.bluecolored.bluemap.common.api.marker;
 
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-
 import com.flowpowered.math.vector.Vector3d;
 import com.google.common.collect.Sets;
-
 import de.bluecolored.bluemap.api.BlueMapAPI;
 import de.bluecolored.bluemap.api.BlueMapMap;
 import de.bluecolored.bluemap.api.marker.Marker;
@@ -43,6 +34,9 @@
 import de.bluecolored.bluemap.core.logger.Logger;
 import ninja.leaping.configurate.ConfigurationNode;
 
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+
 public class MarkerSetImpl implements MarkerSet {
 
 	private final String id;
@@ -217,4 +211,17 @@ public synchronized void save(ConfigurationNode node) {
 		this.hasUnsavedChanges = false;
 	}
 
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) return true;
+		if (o == null || getClass() != o.getClass()) return false;
+		MarkerSetImpl markerSet = (MarkerSetImpl) o;
+		return id.equals(markerSet.id);
+	}
+
+	@Override
+	public int hashCode() {
+		return id.hashCode();
+	}
+
 }