diff --git a/man/man8/ip-address.8.in b/man/man8/ip-address.8.in
index eaa179c6..7ebf0bc9 100644
--- a/man/man8/ip-address.8.in
+++ b/man/man8/ip-address.8.in
@@ -190,6 +190,7 @@ Each address may be tagged with a label string.
 In order to preserve compatibility with Linux-2.0 net aliases,
 this string must coincide with the name of the device or must be prefixed
 with the device name followed by colon.
+The maximum allowed total length of label is 15 characters.
 
 .TP
 .BI scope " SCOPE_VALUE"