diff --git a/livesupport/src/modules/core/include/LiveSupport/Core/UniqueId.h b/livesupport/src/modules/core/include/LiveSupport/Core/UniqueId.h
index 7c74a05fb..04968c0be 100644
--- a/livesupport/src/modules/core/include/LiveSupport/Core/UniqueId.h
+++ b/livesupport/src/modules/core/include/LiveSupport/Core/UniqueId.h
@@ -69,7 +69,8 @@ class UniqueId
     public:
         /**
          *  The type for the numeric value the unique id is represented in.
-         *  This is set to 'long long int', i.e., 32-bit signed integers.
+         *  This is set to 'long long int', i.e., 64-bit signed integers.
+         *  TODO: change this into something not quite as non-portable.
          */
         typedef long long int   IdType;