diff --git a/R/AllClass.R b/R/AllClass.R
index 8d912f3..79ecded 100644
--- a/R/AllClass.R
+++ b/R/AllClass.R
@@ -36,4 +36,9 @@ setClass("H5IdComponent",
 setClass("H5Ref",
          slots = c(val = "raw",
                    type = "integer")
-)
\ No newline at end of file
+)
+
+#' #' @importClassesFrom S4Vectors Factor
+#' setClass("H5Enum",
+#'          contains = "Factor"
+#' )
\ No newline at end of file