diff --git a/lib/libc/sys/sigreturn.2 b/lib/libc/sys/sigreturn.2
index 02d75a83b6ed..13d76f68d48b 100644
--- a/lib/libc/sys/sigreturn.2
+++ b/lib/libc/sys/sigreturn.2
@@ -56,10 +56,6 @@ Execution resumes at the specified pc.
 This system call is used by the trampoline code and
 .Xr longjmp 3
 when returning from a signal to the previously executing program.
-.Sh NOTES
-This system call is not available in
-.Bx 4.2
-hence it should not be used if backward compatibility is needed.
 .Sh RETURN VALUES
 If successful, the system call does not return.
 Otherwise, a value of -1 is returned and