diff --git a/tools/transform.js b/tools/transform.js
index 13268f9b..65b12ab6 100755
--- a/tools/transform.js
+++ b/tools/transform.js
@@ -128,7 +128,7 @@ function transformV2V3(source, version) {
 
   const result = xalan("V2-to-V4-CSDL.xsl", "-IN", source, "-OUT", target);
 
-  if (result.stderr.length) console.error(result.stderr.toString());
+  if (result.stderr.length) console.log(result.stderr.toString());
   if (result.status !== 0) process.exit(1);
 
   transformV4(target, version, true);
@@ -160,7 +160,7 @@ function transformV4(source, version, deleteSource) {
 
   const result = xalan("V4-CSDL-to-OpenAPI.xsl", ...params);
 
-  if (result.stderr.length) console.error(result.stderr.toString());
+  if (result.stderr.length) console.log(result.stderr.toString());
   if (result.status !== 0) process.exit(1);
 
   if (argv.values.pretty || argv.values["used-schemas-only"]) {