diff --git a/BauSystem_Main/src/de/steamwar/bausystem/world/Detonator.java b/BauSystem_Main/src/de/steamwar/bausystem/world/Detonator.java
index 63643ce..955f556 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/world/Detonator.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/world/Detonator.java
@@ -79,7 +79,7 @@ public class Detonator implements Listener {
         for (Detoloader.DetonatorActivation activation: getLocations()) {
 
             Boolean powered;
-            if(activation.activation == 0) switch (Core.getVersion()) {
+            if(activation.activation == -1) switch (Core.getVersion()) {
                 case 15:
                     powered = AutoLoader_15.getLever(activation.location.getBlock());
                     AutoLoader_15.setRedstone(activation.location, !powered);