diff --git a/api/src/main/java/net/md_5/bungee/api/plugin/Command.java b/api/src/main/java/net/md_5/bungee/api/plugin/Command.java
index 9f5d088f..d58431d1 100644
--- a/api/src/main/java/net/md_5/bungee/api/plugin/Command.java
+++ b/api/src/main/java/net/md_5/bungee/api/plugin/Command.java
@@ -1,5 +1,6 @@
 package net.md_5.bungee.api.plugin;
 
+import com.google.common.base.Preconditions;
 import lombok.AccessLevel;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
@@ -37,6 +38,7 @@ public abstract class Command
      */
     public Command(String name, String permission, String... aliases)
     {
+        Preconditions.checkArgument(name != null, "name");
         this.name = name;
         this.permission = permission;
         this.aliases = aliases;
diff --git a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
index cfcc72f0..feb124c8 100644
--- a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
+++ b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
@@ -41,7 +41,7 @@ public class PluginManager
      */
     public void registerCommand(Command command)
     {
-        commandMap.put(command.getName(), command);
+        commandMap.put(command.getName().toLowerCase(), command);
         for (String alias : command.getAliases())
         {
             commandMap.put(alias, command);
@@ -69,7 +69,7 @@ public class PluginManager
     public boolean dispatchCommand(CommandSender sender, String commandLine)
     {
         String[] split = argsSplit.split(commandLine);
-        Command command = commandMap.get(split[0]);
+        Command command = commandMap.get(split[0].toLowerCase());
         if (command == null)
         {
             return false;