diff --git a/private/serialization.nim b/private/serialization.nim
index 662cea4..2ea7eb3 100644
--- a/private/serialization.nim
+++ b/private/serialization.nim
@@ -140,7 +140,8 @@ proc constructObject*[T: float|float32|float64](
   constructScalarItem(s, item, T):
     let hint = guessType(item.scalarContent)
     case hint
-    of yTypeFloat: result = T(parseBiggestFloat(item.scalarContent))
+    of yTypeFloat:
+      discard parseBiggestFloat(item.scalarContent, result)
     of yTypeFloatInf:
         if item.scalarContent[0] == '-': result = NegInf
         else: result = Inf
@@ -877,4 +878,4 @@ proc dump*[K](value: K, target: Stream, tagStyle: TagStyle = tsRootOnly,
   try: present(events, target, serializationTagLibrary, options)
   except YamlStreamError:
     # serializing object does not raise any errors, so we can ignore this
-    assert false, "Can never happen"
\ No newline at end of file
+    assert false, "Can never happen"