diff --git a/errval/errval.go b/errval/errval.go
index 304fa4b..a8ccfb0 100644
--- a/errval/errval.go
+++ b/errval/errval.go
@@ -14,7 +14,11 @@ import (
 // It can be changed in order to customize how values are formatted.
 //
 // By default it uses [pretty.Write].
-var VerboseWriter func(io.Writer, any) = pretty.Write
+var VerboseWriter func(io.Writer, any) = prettyWrite
+
+func prettyWrite(w io.Writer, v any) {
+	pretty.Write(w, v)
+}
 
 // Wrap adds a value to an error.
 //