diff --git a/doc/monitoring/getting_started.rst b/doc/monitoring/getting_started.rst
index 91ad2d74..06b3df57 100644
--- a/doc/monitoring/getting_started.rst
+++ b/doc/monitoring/getting_started.rst
@@ -187,7 +187,7 @@ Custom metric
 
 You can create your own metric in two ways, depending on when you need to take measurements:
 
-- At an arbitrary moment in time
+- At any arbitrary moment of time
 - At the time of requesting the data collected by the metrics
 
 Let's explore both options.