diff --git a/man2/uselib.2 b/man2/uselib.2
index c60fd3eb6..ff99154b4 100644
--- a/man2/uselib.2
+++ b/man2/uselib.2
@@ -35,6 +35,9 @@ uselib \- load shared library
 .B #include <unistd.h>
 .sp
 .BI "int uselib(const char *" library );
+
+.IR Note :
+No declaration of this system call is provided in glibc headers; see NOTES.
 .SH DESCRIPTION
 The system call
 .BR uselib ()
@@ -78,6 +81,15 @@ for example, it does not have the correct magic numbers.
 is Linux-specific, and should not be used in programs
 intended to be portable.
 .SH NOTES
+This obsolete system call is not supported by glibc.
+No declaration is provided in glibc headers, but, through a quirk of history,
+glibc versions before 2.23 did export an ABI for this system call.
+Therefore, in order to employ this system call,
+it was sufficient to manually declare the interface in your code;
+alternatively, you could invoke the system call using
+.BR syscall (2).
+
+In ancient libc versions,
 .BR uselib ()
 was used by early libc startup code to load
 the shared libraries with names found in an array of names