diff --git a/docs/yap.tex b/docs/yap.tex
index d77ac5c31..7c3287797 100644
--- a/docs/yap.tex
+++ b/docs/yap.tex
@@ -3922,8 +3922,8 @@ Arc cosine.
 @item atan(@var{X}) [ISO]
 Arc tangent.
 
-@item atan2(@var{X},@var{Y})
-Four-quadrant arc tangent.
+@item atan(@var{X},@var{Y})
+Four-quadrant arc tangent. Also available as @code{atan2/2}.
 
 @item sinh(@var{X})
 Hyperbolic sine.