diff --git a/src/preserves.nim b/src/preserves.nim
index 3f84e90..ef98bd3 100644
--- a/src/preserves.nim
+++ b/src/preserves.nim
@@ -5,8 +5,8 @@ import bigints
 
 type
   PreserveKind* = enum
-    pkBoolean, pkFloat, pkDouble, pkSignedInteger, pkBigInteger, pkString, pkByteString,
-        pkSymbol, pkRecord, pkSequence, pkSet, pkDictionary, pkEmbedded
+    pkBoolean, pkFloat, pkDouble, pkSignedInteger, pkBigInteger, pkString,
+        pkByteString, pkSymbol, pkRecord, pkSequence, pkSet, pkDictionary, pkEmbedded
 
   Preserve*[T] {.acyclic.} = object
     ## Type that stores a Preserves value.
@@ -144,8 +144,10 @@ proc fields*[T](prs: Preserve[T]): seq[Preserve[T]] {.inline.} =
 
 iterator fields*[T](prs: Preserve[T]): Preserve[T] =
   ## Iterate the fields of a record value.
-  for i in 1..prs.record.high:
-    yield prs.record[i]
+  for i in 1..prs.record.high: yield prs.record[i]
+
+iterator setItems*[T](prs: Preserve[T]): Preserve[T] =
+  for v in prs.set.keys: yield v
 
 proc `<`(x, y: string | seq[byte]): bool =
   for i in 0 .. min(x.high, y.high):