diff --git a/man2/flock.2 b/man2/flock.2
index f10dcdfe4..8c74c5839 100644
--- a/man2/flock.2
+++ b/man2/flock.2
@@ -151,7 +151,7 @@ Since kernel 2.0,
 is implemented as a system call in its own right rather
 than being emulated in the GNU C library as a call to
 .BR fcntl (2).
-This yields true BSD semantics:
+This yields classical BSD semantics:
 there is no interaction between the types of lock
 placed by
 .BR flock ()
@@ -160,6 +160,14 @@ and
 and
 .BR flock ()
 does not detect deadlock.
+(Note, however, that on some modern BSDs,
+.\" E.g., according to the flock(2) man page, FreeBSD since at least 5.3
+.BR flock ()
+and
+.BR fcntl (2)
+locks
+.I do
+interact with one another.)
 .PP
 In Linux kernels up to 2.6.11,
 .BR flock ()