diff --git a/lisp/faces.el b/lisp/faces.el
index ccf427e6f12..b821d66f72e 100644
--- a/lisp/faces.el
+++ b/lisp/faces.el
@@ -231,8 +231,8 @@ of a face name is the same for all frames."
 (defun face-equal (face1 face2 &optional frame)
   "Non-nil if faces FACE1 and FACE2 are equal.
 Faces are considered equal if all their attributes are equal.
-If the optional argument FRAME is given, report on face FACE in that frame.
-If FRAME is t, report on the defaults for face FACE (for new frames).
+If the optional argument FRAME is given, report on FACE1 and FACE2 in that frame.
+If FRAME is t, report on the defaults for FACE1 and FACE2 (for new frames).
 If FRAME is omitted or nil, use the selected frame."
   (internal-lisp-face-equal-p face1 face2 frame))