diff --git a/doc/api/stream.md b/doc/api/stream.md
index eb7ea57bfde..a1d37e24e55 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -684,7 +684,7 @@ added: v0.9.4
 * {Error}
 
 The `'error'` event may be emitted by a Readable implementation at any time.
-Typically, this may occur if the underlying stream in unable to generate data
+Typically, this may occur if the underlying stream is unable to generate data
 due to an underlying internal failure, or when a stream implementation attempts
 to push an invalid chunk of data.