diff --git a/man2/msgop.2 b/man2/msgop.2
index c48b44b88..d89c49bb2 100644
--- a/man2/msgop.2
+++ b/man2/msgop.2
@@ -358,7 +358,7 @@ will be set to one among the following values:
 The calling process does not have write permission on the message queue,
 and does not have the
 .B CAP_IPC_OWNER
-capability.
+capability in the user namespace that governs its IPC namespace.
 .TP
 .B EAGAIN
 The message can't be sent due to the