diff --git a/bukkit/src/main/java/co/aikar/commands/BukkitCommandManager.java b/bukkit/src/main/java/co/aikar/commands/BukkitCommandManager.java
index 08472a98..272c8627 100644
--- a/bukkit/src/main/java/co/aikar/commands/BukkitCommandManager.java
+++ b/bukkit/src/main/java/co/aikar/commands/BukkitCommandManager.java
@@ -102,6 +102,11 @@ public class BukkitCommandManager extends CommandManager {
         return completions;
     }
 
+    @Override
+    public boolean hasRegisteredCommands() {
+        return !registeredCommands.isEmpty();
+    }
+
     @Override
     public void registerCommand(BaseCommand command) {
         final String plugin = this.plugin.getName().toLowerCase();
diff --git a/core/src/main/java/co/aikar/commands/BaseCommand.java b/core/src/main/java/co/aikar/commands/BaseCommand.java
index fac7d2b3..8b314bde 100644
--- a/core/src/main/java/co/aikar/commands/BaseCommand.java
+++ b/core/src/main/java/co/aikar/commands/BaseCommand.java
@@ -103,12 +103,13 @@ public abstract class BaseCommand {
     void onRegister(CommandManager manager, String cmd) {
         this.manager = manager;
         final Class<? extends BaseCommand> self = this.getClass();
-        CommandAlias rootCmdAlias = self.getAnnotation(CommandAlias.class);
+        CommandAlias rootCmdAliasAnno = self.getAnnotation(CommandAlias.class);
+        String rootCmdAlias = rootCmdAliasAnno != null ? manager.getCommandReplacements().replace(rootCmdAliasAnno.value()).toLowerCase() : null;
         if (cmd == null) {
             if (rootCmdAlias == null) {
                 cmd = "__" + self.getSimpleName();
             } else {
-                cmd = ACFPatterns.PIPE.split(manager.getCommandReplacements().replace(rootCmdAlias.value()))[0];
+                cmd = ACFPatterns.PIPE.split(rootCmdAlias)[0];
             }
             cmd = cmd.toLowerCase();
         }
@@ -164,7 +165,7 @@ public abstract class BaseCommand {
 
         if (rootCmdAlias != null) {
             Set<String> cmdList = new HashSet<>();
-            Collections.addAll(cmdList, ACFPatterns.PIPE.split(rootCmdAlias.value().toLowerCase()));
+            Collections.addAll(cmdList, ACFPatterns.PIPE.split(rootCmdAlias));
             cmdList.remove(cmd);
             for (String cmdAlias : cmdList) {
                 register(cmdAlias, this);
diff --git a/core/src/main/java/co/aikar/commands/CommandManager.java b/core/src/main/java/co/aikar/commands/CommandManager.java
index 64b524e8..028cb8f5 100644
--- a/core/src/main/java/co/aikar/commands/CommandManager.java
+++ b/core/src/main/java/co/aikar/commands/CommandManager.java
@@ -34,7 +34,7 @@ import java.util.Map;
 public abstract class CommandManager {
 
     protected Map<String, RootCommand> rootCommands = new HashMap<>();
-    protected CommandReplacements replacements = new CommandReplacements();
+    protected CommandReplacements replacements = new CommandReplacements(this);
 
     /**
      * Gets the command contexts manager
@@ -68,6 +68,7 @@ public abstract class CommandManager {
      * @return boolean
      */
     public abstract void registerCommand(BaseCommand command);
+    public abstract boolean hasRegisteredCommands();
 
     public abstract TimingManager getTimings();
 
diff --git a/core/src/main/java/co/aikar/commands/CommandReplacements.java b/core/src/main/java/co/aikar/commands/CommandReplacements.java
index aceceb04..cf8e5b79 100644
--- a/core/src/main/java/co/aikar/commands/CommandReplacements.java
+++ b/core/src/main/java/co/aikar/commands/CommandReplacements.java
@@ -32,6 +32,12 @@ import java.util.regex.Pattern;
  * Manages replacement template strings
  */
 public class CommandReplacements {
+
+    private final CommandManager manager;
+
+    CommandReplacements(CommandManager manager) {
+        this.manager = manager;
+    }
     private final Map<String, Map.Entry<Pattern, String>> replacements = new LinkedHashMap<>();
 
     public void addReplacements(String... replacements) {
@@ -44,6 +50,11 @@ public class CommandReplacements {
     }
 
     public String addReplacement(String key, String val) {
+        if (this.manager.hasRegisteredCommands()) {
+            ACFLog.severe("You are registering replacements after you have registered your commands!");
+            ACFLog.severe("This is not allowed, and this replacement (" + key + ") will not work for any previously registered command.");
+        }
+
         key = ACFPatterns.PERCENTAGE.matcher(key.toLowerCase()).replaceAll("");
         Pattern pattern = Pattern.compile("%" + Pattern.quote(key) + "\\b", Pattern.CASE_INSENSITIVE);
 
diff --git a/example/src/main/java/co/aikar/acfexample/ACFExample.java b/example/src/main/java/co/aikar/acfexample/ACFExample.java
index 12988bf7..66d7f027 100644
--- a/example/src/main/java/co/aikar/acfexample/ACFExample.java
+++ b/example/src/main/java/co/aikar/acfexample/ACFExample.java
@@ -41,6 +41,7 @@ public final class ACFExample extends JavaPlugin {
     private void registerCommands() {
         commandManager = new BukkitCommandManager(this);
         commandManager.getCommandReplacements().addReplacements("test", "foobar", "%foo", "barbaz");
+        commandManager.getCommandReplacements().addReplacement("testcmd", "test4|foobar|barbaz");
         commandManager.getCommandContexts().registerContext(SomeObject.class, SomeObject.getContextResolver());
         commandManager.getCommandCompletions().registerCompletion("test", (sender, config, input, c) -> (
             Lists.newArrayList("foo", "bar", "baz")
diff --git a/example/src/main/java/co/aikar/acfexample/SomeCommand.java b/example/src/main/java/co/aikar/acfexample/SomeCommand.java
index cbc10a37..4d211d28 100644
--- a/example/src/main/java/co/aikar/acfexample/SomeCommand.java
+++ b/example/src/main/java/co/aikar/acfexample/SomeCommand.java
@@ -40,8 +40,7 @@ import org.bukkit.entity.Player;
 @CommandAlias("acf|somecommand|sc|somcom")
 public class SomeCommand extends BaseCommand {
 
-    @Subcommand("test4")
-    @CommandAlias("acftest|acft")
+    @CommandAlias("%testcmd")
     public void onCommand(CommandSender sender, SomeObject someObject) {
         sender.sendMessage("You got an object of type: " + someObject.getClass().getName() + " with a value of: " + someObject.getValue());
     }