diff --git a/man2/sigaction.2 b/man2/sigaction.2
index 5fe2539f3..65f1a7062 100644
--- a/man2/sigaction.2
+++ b/man2/sigaction.2
@@ -527,9 +527,17 @@ fills in
 .IR si_errno ,
 and other fields as described in
 .BR seccomp (2).
-.PP
+.\"
+.SS
+The si_code field
+The
 .I si_code
-is a value (not a bit mask) indicating why this signal was sent.
+field inside the
+.I siginfo_t
+argument that is passed to a
+.B SA_SIGINFO
+signal handler is a value (not a bit mask)
+indicating why this signal was sent.
 For a
 .BR ptrace (2)
 event,