diff --git a/man2/getdomainname.2 b/man2/getdomainname.2
index 228eab81a..720fb6ec9 100644
--- a/man2/getdomainname.2
+++ b/man2/getdomainname.2
@@ -57,6 +57,8 @@ Feature Test Macro Requirements for glibc (see
 .SH DESCRIPTION
 These functions are used to access or to change the NIS domain name of the
 host system.
+More precisely, they operate on the NIS domain name associated with the calling
+process's UTS namespace.
 .PP
 .BR setdomainname ()
 sets the domain name to the value given in the character array
@@ -134,4 +136,5 @@ field returned from a call to
 .SH SEE ALSO
 .BR gethostname (2),
 .BR sethostname (2),
-.BR uname (2)
+.BR uname (2),
+.BR uts_namespaces (7)