diff --git a/src/main/scala/io/circe/yaml/Printer.scala b/src/main/scala/io/circe/yaml/Printer.scala
index af7dbc0e..0cae9922 100644
--- a/src/main/scala/io/circe/yaml/Printer.scala
+++ b/src/main/scala/io/circe/yaml/Printer.scala
@@ -95,7 +95,7 @@ final case class Printer(
         scalarNode(Tag.BOOL, bool.toString),
       number => {
         if (number.toLong.nonEmpty)
-          scalarNode(Tag.INT, number.toString)
+          scalarNode(Tag.INT, number.toLong.get.toString)
         else
           scalarNode(Tag.FLOAT, number.toString)
       },