diff --git a/Sources/BindingGenerator/CLI.swift b/Sources/BindingGenerator/CLI.swift
index 29968ea..916a65c 100644
--- a/Sources/BindingGenerator/CLI.swift
+++ b/Sources/BindingGenerator/CLI.swift
@@ -9,9 +9,11 @@ struct HtmlElement {
     let type:String
 }
 
+nonisolated(unsafe) let _stderr = stderr 
+
 struct StandardError: TextOutputStream {
   mutating func write(_ string: String) {
-    for byte in string.utf8 { putc(numericCast(byte), stderr) }
+    for byte in string.utf8 { putc(numericCast(byte), _stderr) }
   }
 }
 nonisolated(unsafe) var standardError: StandardError = StandardError()