diff --git a/man8/ldconfig.8 b/man8/ldconfig.8
index 1bda41f34..f407f11ec 100644
--- a/man8/ldconfig.8
+++ b/man8/ldconfig.8
@@ -112,6 +112,7 @@ instead of
 .IR /etc/ld.so.conf .
 .TP
 .B \-l
+(Since glibc 2.2)
 Library mode.
 Manually link individual libraries.
 Intended for use by experts only.