diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 32fe7236d..c1022471b 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -445,7 +445,7 @@ Insufficient kernel memory was available.
 .\" cefdca0a86be517bc390fc4541e3674b8e7803b0
 The caller is not privileged (does not have the
 .B CAP_SYS_PTRACE
-capability), and
+capability in the initial user namespace), and
 .I /proc/sys/vm/unprivileged_userfaultfd
 has the value 0.
 .SH VERSIONS