diff --git a/lib/helpers/formDataToStream.js b/lib/helpers/formDataToStream.js
index 76127910..38320493 100644
--- a/lib/helpers/formDataToStream.js
+++ b/lib/helpers/formDataToStream.js
@@ -77,7 +77,7 @@ const formDataToStream = (form, headersHandler, options) => {
   }
 
   if (boundary.length < 1 || boundary.length > 70) {
-    throw Error('boundary must be 10-70 characters long');
+    throw Error('boundary must be 1-70 characters long');
   }
 
   const boundaryBytes = textEncoder.encode('--' + boundary + CRLF);