diff --git a/Documentation/filesystems/mount_api.rst b/Documentation/filesystems/mount_api.rst
index 1d16787a00e9..253078b99799 100644
--- a/Documentation/filesystems/mount_api.rst
+++ b/Documentation/filesystems/mount_api.rst
@@ -778,7 +778,8 @@ process the parameters it is given.
 
    * ::
 
-       bool fs_validate_description(const struct fs_parameter_description *desc);
+       bool fs_validate_description(const char *name,
+                                    const struct fs_parameter_description *desc);
 
      This performs some validation checks on a parameter description.  It
      returns true if the description is good and false if it is not.  It will