diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi
index 5cf2e89644d17a3fe39dd133de965ced25b32a02..bf2c9c8a7d6c6a20f9ffdc13508d8cd51fe87ba6 100644
--- a/doc/lispref/sequences.texi
+++ b/doc/lispref/sequences.texi
@@ -601,7 +601,7 @@ returned value is a list.
 @defun seq-mapn function &rest sequences
   This function returns the result of applying @var{function} to each
 element of @var{sequences}.  The arity (@pxref{What Is a Function,
-sub-arity}) of @var{function} must match the number of sequences.
+subr-arity}) of @var{function} must match the number of sequences.
 Mapping stops at the end of the shortest sequence, and the returned
 value is a list.