diff --git a/man2/fanotify_init.2 b/man2/fanotify_init.2
index 2418bbdd2..2b44fc6ec 100644
--- a/man2/fanotify_init.2
+++ b/man2/fanotify_init.2
@@ -26,7 +26,7 @@
 fanotify_init \- create and initialize fanotify group
 .SH SYNOPSIS
 .nf
-.B #include <fcntl.h>
+.BR "#include <fcntl.h>" "            /* Definition of " O_* " constants */"
 .B #include <sys/fanotify.h>
 .PP
 .BI "int fanotify_init(unsigned int " flags ", unsigned int " event_f_flags );