diff --git a/src/main/java/org/terasology/navgraph/NavGraphSystem.java b/src/main/java/org/terasology/navgraph/NavGraphSystem.java
index ebb6b9a..e82d5a1 100644
--- a/src/main/java/org/terasology/navgraph/NavGraphSystem.java
+++ b/src/main/java/org/terasology/navgraph/NavGraphSystem.java
@@ -15,6 +15,8 @@
  */
 package org.terasology.navgraph;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.terasology.biomesAPI.Biome;
 import org.terasology.entitySystem.entity.EntityManager;
 import org.terasology.entitySystem.entity.EntityRef;
@@ -52,6 +54,8 @@
 public class NavGraphSystem extends BaseComponentSystem implements UpdateSubscriberSystem, WorldChangeListener {
     private static final float EVENT_COOLDOWN = 0.4f;
 
+    Logger logger = LoggerFactory.getLogger(NavGraphSystem.class);
+
     @In
     private WorldProvider world;
     @In