diff --git a/lib/internal/blob.js b/lib/internal/blob.js
index 19ba47f1752c59..0f3d429d937190 100644
--- a/lib/internal/blob.js
+++ b/lib/internal/blob.js
@@ -137,7 +137,7 @@ class Blob {
     if (sources === null ||
         typeof sources[SymbolIterator] !== 'function' ||
         typeof sources === 'string') {
-      throw new ERR_INVALID_ARG_TYPE('sources', 'Iterable', sources);
+      throw new ERR_INVALID_ARG_TYPE('sources', 'a sequence', sources);
     }
     validateObject(options, 'options');
     let {