diff --git a/doc/api/errors.md b/doc/api/errors.md
index 0608cacce13ec0..2c2618b42b6030 100644
--- a/doc/api/errors.md
+++ b/doc/api/errors.md
@@ -1325,6 +1325,12 @@ When using [`fs.cp()`][], `src` or `dest` pointed to an invalid path.
+### `ERR_HTTP_CONTENT_LENGTH_MISMATCH`
+
+Response body size doesn't match with the specified content-length header value.
+
+
+
### `ERR_FS_CP_FIFO_PIPE`