diff --git a/man3/getlogin.3 b/man3/getlogin.3
index 03e2d7fbb..d59caf569 100644
--- a/man3/getlogin.3
+++ b/man3/getlogin.3
@@ -45,7 +45,8 @@ Feature Test Macro Requirements for glibc (see
 .in
 .sp
 .BR getlogin_r ():
-_REENTRANT || _POSIX_C_SOURCE\ >=\ 199506L
+.\" Deprecated: _REENTRANT ||
+_POSIX_C_SOURCE\ >=\ 199506L
 .sp
 .BR cuserid ():
 .nf