diff --git a/src/main/java/me/towdium/jecalculation/JustEnoughCalculation.java b/src/main/java/me/towdium/jecalculation/JustEnoughCalculation.java
index f17c1da..05c7a2d 100644
--- a/src/main/java/me/towdium/jecalculation/JustEnoughCalculation.java
+++ b/src/main/java/me/towdium/jecalculation/JustEnoughCalculation.java
@@ -1,14 +1,10 @@
 package me.towdium.jecalculation;
 
 import cpw.mods.fml.common.Mod;
-import cpw.mods.fml.common.event.FMLInitializationEvent;
-import cpw.mods.fml.common.event.FMLPostInitializationEvent;
-import cpw.mods.fml.common.event.FMLPreInitializationEvent;
-import cpw.mods.fml.relauncher.Side;
-import cpw.mods.fml.relauncher.SideOnly;
+import cpw.mods.fml.common.SidedProxy;
+import cpw.mods.fml.common.event.*;
 import javax.annotation.ParametersAreNonnullByDefault;
-import me.towdium.jecalculation.nei.NEIPlugin;
-import me.towdium.jecalculation.network.ClientHandler;
+import me.towdium.jecalculation.network.CommonProxy;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -17,30 +13,61 @@ import org.apache.logging.log4j.Logger;
  */
 @ParametersAreNonnullByDefault
 @SuppressWarnings("unused")
-@SideOnly(Side.CLIENT)
-@Mod(modid = Tags.MODID, name = Tags.MODNAME, version = Tags.VERSION, dependencies = "required-after:NotEnoughItems")
+@Mod(
+        modid = Tags.MODID,
+        name = Tags.MODNAME,
+        version = Tags.VERSION,
+        dependencies = "required-after:NotEnoughItems",
+        acceptedMinecraftVersions = "[1.7.10]")
 public class JustEnoughCalculation {
+    public static Logger logger = LogManager.getLogger(Tags.MODID);
+
+    @SidedProxy(
+            clientSide = Tags.GROUPNAME + ".network.ClientProxy",
+            serverSide = Tags.GROUPNAME + ".network.CommonProxy")
+    public static CommonProxy proxy;
+
     @Mod.Instance(Tags.MODID)
     public static JustEnoughCalculation INSTANCE;
 
-    public static ClientHandler handler = new ClientHandler();
-
-    public static Logger logger = LogManager.getLogger(Tags.MODID);
-
     @Mod.EventHandler
-    public static void initPre(FMLPreInitializationEvent event) {
-        JecaConfig.preInit(event);
-        handler.initPre();
+    public static void preInit(FMLPreInitializationEvent event) {
+        proxy.preInit(event);
     }
 
     @Mod.EventHandler
     public static void init(FMLInitializationEvent event) {
-        handler.init();
+        proxy.init(event);
     }
 
     @Mod.EventHandler
     public static void postInit(FMLPostInitializationEvent event) {
-        handler.initPost();
-        NEIPlugin.init();
+        proxy.postInit(event);
+    }
+
+    @Mod.EventHandler
+    public void serverAboutToStart(FMLServerAboutToStartEvent event) {
+        proxy.serverAboutToStart(event);
+    }
+
+    @Mod.EventHandler
+    // register server commands in this event handler
+    public void serverStarting(FMLServerStartingEvent event) {
+        proxy.serverStarting(event);
+    }
+
+    @Mod.EventHandler
+    public void serverStarted(FMLServerStartedEvent event) {
+        proxy.serverStarted(event);
+    }
+
+    @Mod.EventHandler
+    public void serverStopping(FMLServerStoppingEvent event) {
+        proxy.serverStopping(event);
+    }
+
+    @Mod.EventHandler
+    public void serverStopped(FMLServerStoppedEvent event) {
+        proxy.serverStopped(event);
     }
 }
diff --git a/src/main/java/me/towdium/jecalculation/network/ClientHandler.java b/src/main/java/me/towdium/jecalculation/network/ClientHandler.java
deleted file mode 100644
index e295562..0000000
--- a/src/main/java/me/towdium/jecalculation/network/ClientHandler.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package me.towdium.jecalculation.network;
-
-import static me.towdium.jecalculation.gui.JecaGui.keyOpenGuiCraft;
-import static me.towdium.jecalculation.gui.JecaGui.keyOpenGuiMath;
-
-import cpw.mods.fml.client.registry.ClientRegistry;
-import cpw.mods.fml.relauncher.Side;
-import cpw.mods.fml.relauncher.SideOnly;
-import me.towdium.jecalculation.command.JecaCommand;
-import me.towdium.jecalculation.data.Controller;
-import me.towdium.jecalculation.data.label.ILabel;
-import me.towdium.jecalculation.event.Handlers;
-import net.minecraftforge.client.ClientCommandHandler;
-
-@SideOnly(Side.CLIENT)
-public class ClientHandler {
-
-    public void initPre() {
-        Handlers.register();
-    }
-
-    public void initPost() {
-        ILabel.initServer();
-        ClientCommandHandler.instance.registerCommand(new JecaCommand());
-        ILabel.initClient();
-        Controller.loadFromLocal();
-    }
-
-    public void init() {
-        ClientRegistry.registerKeyBinding(keyOpenGuiCraft);
-        ClientRegistry.registerKeyBinding(keyOpenGuiMath);
-    }
-}
diff --git a/src/main/java/me/towdium/jecalculation/network/ClientProxy.java b/src/main/java/me/towdium/jecalculation/network/ClientProxy.java
new file mode 100644
index 0000000..4e17062
--- /dev/null
+++ b/src/main/java/me/towdium/jecalculation/network/ClientProxy.java
@@ -0,0 +1,58 @@
+package me.towdium.jecalculation.network;
+
+import static me.towdium.jecalculation.gui.JecaGui.keyOpenGuiCraft;
+import static me.towdium.jecalculation.gui.JecaGui.keyOpenGuiMath;
+
+import cpw.mods.fml.client.registry.ClientRegistry;
+import cpw.mods.fml.common.event.*;
+import me.towdium.jecalculation.JecaConfig;
+import me.towdium.jecalculation.command.JecaCommand;
+import me.towdium.jecalculation.data.Controller;
+import me.towdium.jecalculation.data.label.ILabel;
+import me.towdium.jecalculation.event.Handlers;
+import me.towdium.jecalculation.nei.NEIPlugin;
+import net.minecraftforge.client.ClientCommandHandler;
+
+@SuppressWarnings("unused")
+public class ClientProxy extends CommonProxy {
+
+    public void preInit(FMLPreInitializationEvent event) {
+        JecaConfig.preInit(event);
+        Handlers.register();
+    }
+
+    public void init(FMLInitializationEvent event) {
+        ClientRegistry.registerKeyBinding(keyOpenGuiCraft);
+        ClientRegistry.registerKeyBinding(keyOpenGuiMath);
+    }
+
+    public void postInit(FMLPostInitializationEvent event) {
+        ILabel.initServer();
+        ClientCommandHandler.instance.registerCommand(new JecaCommand());
+        ILabel.initClient();
+        Controller.loadFromLocal();
+
+        NEIPlugin.init();
+    }
+
+    public void serverAboutToStart(FMLServerAboutToStartEvent event) {
+        super.serverAboutToStart(event);
+    }
+
+    // register server commands in this event handler
+    public void serverStarting(FMLServerStartingEvent event) {
+        super.serverStarting(event);
+    }
+
+    public void serverStarted(FMLServerStartedEvent event) {
+        super.serverStarted(event);
+    }
+
+    public void serverStopping(FMLServerStoppingEvent event) {
+        super.serverStopping(event);
+    }
+
+    public void serverStopped(FMLServerStoppedEvent event) {
+        super.serverStopped(event);
+    }
+}
diff --git a/src/main/java/me/towdium/jecalculation/network/CommonProxy.java b/src/main/java/me/towdium/jecalculation/network/CommonProxy.java
new file mode 100644
index 0000000..3f551be
--- /dev/null
+++ b/src/main/java/me/towdium/jecalculation/network/CommonProxy.java
@@ -0,0 +1,27 @@
+package me.towdium.jecalculation.network;
+
+import cpw.mods.fml.common.event.*;
+
+public class CommonProxy {
+
+    // preInit "Run before anything else. Read your config, create blocks, items,
+    // etc, and register them with the GameRegistry."
+    public void preInit(FMLPreInitializationEvent event) {}
+
+    // load "Do your mod setup. Build whatever data structures you care about. Register recipes."
+    public void init(FMLInitializationEvent event) {}
+
+    // postInit "Handle interaction with other mods, complete your setup based on this."
+    public void postInit(FMLPostInitializationEvent event) {}
+
+    public void serverAboutToStart(FMLServerAboutToStartEvent event) {}
+
+    // register server commands in this event handler
+    public void serverStarting(FMLServerStartingEvent event) {}
+
+    public void serverStarted(FMLServerStartedEvent event) {}
+
+    public void serverStopping(FMLServerStoppingEvent event) {}
+
+    public void serverStopped(FMLServerStoppedEvent event) {}
+}