diff --git a/pps_wiki/faq.md b/pps_wiki/faq.md
index 3fa72033042c2f13878af69611076e378b411a5d..b9de7e5d32dc4ac5c55a6255e9305ea2aaf839d0 100644
--- a/pps_wiki/faq.md
+++ b/pps_wiki/faq.md
@@ -284,8 +284,8 @@ if (true)
 ```
 This would work if it is in the ``main()`` function of a node, but if it is in another function then you may need to declare the subscriber as a class variable.
 
-To observe any message published on a particular topic, after launching your node, open a separate command window and type the command:
+To observe all messages published on a particular topic, after launching your node, open a separate command window and type the command:
 ```
 rostopic echo /namespace/topicname
 ```
-where ``/namespace/topicname`` needs to be replace with the topic that you wish to echo. Any messages received by this topic will be directly printed out in the command window.
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+where ``/namespace/topicname`` needs to be replaced with the topic that you wish to echo. All messages published to this topic will be directly printed out in the command window.
\ No newline at end of file