diff --git a/doc/ref/api-procedures.texi b/doc/ref/api-procedures.texi
index 65ae2dbb1..2401d4fff 100644
--- a/doc/ref/api-procedures.texi
+++ b/doc/ref/api-procedures.texi
@@ -123,6 +123,9 @@ same way as @code{scm_c_make_gsubr}, which is usually not further
 required.
 @end deftypefun
 
+@xref{Foreign Functions}, for another interface to call procedures
+written in C from Scheme.
+
 @node Compiled Procedures
 @subsection Compiled Procedures