diff --git a/src/main/java/org/ultramine/core/service/EventBusRegisteredService.java b/src/main/java/org/ultramine/core/service/EventBusRegisteredService.java
new file mode 100644
index 0000000..6e30ca6
--- /dev/null
+++ b/src/main/java/org/ultramine/core/service/EventBusRegisteredService.java
@@ -0,0 +1,33 @@
+package org.ultramine.core.service;
+
+import cpw.mods.fml.common.eventhandler.EventBus;
+import net.minecraftforge.common.MinecraftForge;
+
+public abstract class EventBusRegisteredService implements ServiceStateHandler
+{
+	private final EventBus[] buses;
+
+	public EventBusRegisteredService(EventBus... buses)
+	{
+		this.buses = buses;
+	}
+
+	public EventBusRegisteredService()
+	{
+		this(MinecraftForge.EVENT_BUS);
+	}
+
+	@Override
+	public void onEnabled()
+	{
+		for(EventBus bus : buses)
+			bus.register(this);
+	}
+
+	@Override
+	public void onDisabled()
+	{
+		for(EventBus bus : buses)
+			bus.unregister(this);
+	}
+}
diff --git a/src/main/java/org/ultramine/core/service/ServiceStateHandler.java b/src/main/java/org/ultramine/core/service/ServiceStateHandler.java
new file mode 100644
index 0000000..509fd2c
--- /dev/null
+++ b/src/main/java/org/ultramine/core/service/ServiceStateHandler.java
@@ -0,0 +1,8 @@
+package org.ultramine.core.service;
+
+public interface ServiceStateHandler
+{
+	default void onEnabled() {}
+
+	default void onDisabled() {}
+}
diff --git a/src/main/java/org/ultramine/server/service/UMServiceManager.java b/src/main/java/org/ultramine/server/service/UMServiceManager.java
index ca214ab..df47790 100644
--- a/src/main/java/org/ultramine/server/service/UMServiceManager.java
+++ b/src/main/java/org/ultramine/server/service/UMServiceManager.java
@@ -5,6 +5,7 @@
 import org.ultramine.core.service.ServiceDelegate;
 import org.ultramine.core.service.ServiceManager;
 import org.ultramine.core.service.ServiceProviderLoader;
+import org.ultramine.core.service.ServiceStateHandler;
 import org.ultramine.core.service.ServiceSwitchEvent;
 
 import javax.annotation.Nonnull;
@@ -89,8 +90,14 @@
 			ServiceProviderRegistration<T> oldProvider = currentProvider;
 			MinecraftForge.EVENT_BUS.post(new ServiceSwitchEvent.Pre(serviceClass, delegate, oldProvider == null ? null : oldProvider.providerLoader, newProvider.providerLoader));
 			if(oldProvider != null)
+			{
+				if(delegate.getProvider() instanceof ServiceStateHandler)
+					((ServiceStateHandler)delegate.getProvider()).onDisabled();
 				oldProvider.providerLoader.unload();
+			}
 			newProvider.providerLoader.load(delegate);
+			if(delegate.getProvider() instanceof ServiceStateHandler)
+				((ServiceStateHandler)delegate.getProvider()).onEnabled();
 			currentProvider = newProvider;
 			MinecraftForge.EVENT_BUS.post(new ServiceSwitchEvent.Post(serviceClass, delegate, oldProvider == null ? null : oldProvider.providerLoader, newProvider.providerLoader));
 		}