update code to comply with new superstring policy

[nit.git] / lib / opts.nit

diff --git a/lib/opts.nit b/lib/opts.nit
index f383a32..3e0e0e0 100644 (file)
--- a/lib/opts.nit
+++ b/lib/opts.nit
@@ -80,7 +80,7 @@ abstract class Option
        fun pretty_default: String
        do
                var dv = default_value
-               if dv != null then return " ({dv})"
+               if dv != null then return " ({dv.to_s})"
                return ""
        end