diff --git a/man2/sigaction.2 b/man2/sigaction.2
index 9957fd74d..6a284b4b6 100644
--- a/man2/sigaction.2
+++ b/man2/sigaction.2
@@ -650,7 +650,11 @@ Failed address bound checks.
 .TP
 .BR SEGV_PKUERR " (since Linux 4.6)"
 .\" commit cd0ea35ff5511cde299a61c21a95889b4a71464e
-Protection key fault.
+Access was denied by memory protection keys.
+See
+.BR pkeys (7).
+The protection key which applied to this access is available via
+.IR si_pkey .
 .RE
 .PP
 The following values can be placed in