diff --git a/man7/mq_overview.7 b/man7/mq_overview.7
index 5eff94b07..f8af879b2 100644
--- a/man7/mq_overview.7
+++ b/man7/mq_overview.7
@@ -184,11 +184,20 @@ is 8192 bytes.
 The minimum value is 128 (8192 in kernels before 2.6.28).
 The upper limit for
 .I msgsize_max
-is 1,048,576 (in kernels before 2.6.28, the upper limit was
+has varied across kernel versions:
+before Linux 2.6.28, the upper limit was
 .BR INT_MAX ;
-that is, 2,147,483,647 on Linux/86).
-This limit is ignored for privileged processes
-.RB ( CAP_SYS_RESOURCE ).
+(that is, 2,147,483,647 on Linux/86);
+starting with Linux 2.6.38, the limit was 1,048,576;
+since Linux 3.5, the limit is 16,777,216
+.RB ( HARD_MSGSIZEMAX ).
+The
+.I msgsize_max
+limit is ignored for privileged process
+.RB ( CAP_SYS_RESOURCE ),
+but, since Linux 3.5, the 
+.BR HARD_MSGSIZEMAX
+ceiling is enforced for privileged processes.
 .TP
 .I /proc/sys/fs/mqueue/queues_max
 This file can be used to view and change the system-wide limit on the