diff --git a/src/preserves.nim b/src/preserves.nim
index 63be625..e3b74d7 100644
--- a/src/preserves.nim
+++ b/src/preserves.nim
@@ -874,7 +874,8 @@ proc fromPreserve*[T, E](v: var T; pr: Preserve[E]): bool =
         pr == lit
       else:
         fromPreserve(val, pr)
-    when T.hasCustomPragma(preservesRecord):
+    when T.hasCustomPragma(unpreservable): {.fatal: "unpreservable type " & $T.}
+    elif T.hasCustomPragma(preservesRecord):
       if pr.isRecord and pr.label.isSymbol(T.getCustomPragmaVal(preservesRecord)):
         result = true
         var i: int
@@ -897,7 +898,7 @@ proc fromPreserve*[T, E](v: var T; pr: Preserve[E]): bool =
               inc j
           else:
             if result and i < pr.len:
-              result = result and fromPreserve(field, pr.sequence[i])
+              result = result and fieldFromPreserve(name, field, pr.sequence[i])
             inc i
         result = result and (i == pr.len)
     elif T.hasCustomPragma(preservesDictionary):