diff --git a/src/as/com/threerings/io/Translations.as b/src/as/com/threerings/io/Translations.as
index fcf8edce2..9b46f4912 100644
--- a/src/as/com/threerings/io/Translations.as
+++ b/src/as/com/threerings/io/Translations.as
@@ -21,7 +21,7 @@
 
 package com.threerings.io {
 
-import com.threerings.util.HashMap;
+import flash.utils.Dictionary;
 
 /**
  * Maintains a set of translations between actionscript class names
@@ -31,27 +31,27 @@ public class Translations
 {
     public static function getToServer (asName :String) :String
     {
-        var javaName :String = (_toServer.get(asName) as String);
+        var javaName :String = (_toServer[asName] as String);
         return (javaName == null) ? asName.replace("_", "$") : javaName;
     }
 
     public static function getFromServer (javaName :String) :String
     {
-        var asName :String = (_fromServer.get(javaName) as String);
+        var asName :String = (_fromServer[javaName] as String);
         return (asName == null) ? javaName.replace("$", "_") : asName;
     }
 
     public static function addTranslation (asName :String, javaName :String) :void
     {
-        _toServer.put(asName, javaName);
-        _fromServer.put(javaName, asName);
+        _toServer[asName] = javaName;
+        _fromServer[javaName] = asName;
     }
 
     /** A mapping of actionscript names to java names. */
-    protected static var _toServer :HashMap = new HashMap();
+    protected static var _toServer :Dictionary = new Dictionary();
 
     /** A mapping of java names to actionscript names. */
-    protected static var _fromServer :HashMap = new HashMap();
+    protected static var _fromServer :Dictionary = new Dictionary();
 
     // initialize some standard classes
     addTranslation("Object", "java.lang.Object");
@@ -60,6 +60,7 @@ public class Translations
     addTranslation("com.threerings.util.langBoolean", "java.lang.Boolean");
     addTranslation("com.threerings.util.Byte", "java.lang.Byte");
     addTranslation("com.threerings.util.Integer", "java.lang.Integer");
+    addTranslation("com.threerings.util.Long", "java.lang.Long");
     addTranslation("com.threerings.util.Float", "java.lang.Float");
 }
 }