diff --git a/docs/sources/reference/alerting.md b/docs/sources/reference/alerting.md
index bddd85ba0..e1670d4d2 100644
--- a/docs/sources/reference/alerting.md
+++ b/docs/sources/reference/alerting.md
@@ -1,12 +1,12 @@
 # Alerting
 
-Since version 4.0 [Grafana](https://grafana.com/) has own alerting engine.
+Since version 4.0 [Grafana](https://grafana.com/) has its own alerting engine.
 
 > Alerting in Grafana allows you to attach rules to your dashboard panels. When you save the dashboard Grafana will extract the alert rules into a separate alert rule storage and schedule them for evaluation.
 
 > In the alert tab of the graph panel you can configure how often the alert rule should be evaluated and the conditions that need to be met for the alert to change state and trigger its notifications.
 
-Read more about alering feature in [Grafana docs](http://docs.grafana.org/alerting/rules/).
+Read more about alerting feature in [Grafana docs](http://docs.grafana.org/alerting/rules/).
 
 On the other hand, Zabbix has its own alerting system with triggers, events and notifications. And the best way is to 
 combine benefits of these systems into Zabbix plugin for Grafana. So how it works you'll ask? Grafana alerting feature 
@@ -26,7 +26,7 @@ about triggers related to metrics at particular panel and fires alert state for
 So there are three possible cases for each panel:
 
   1. Panel contains Zabbix items which are used in triggers:
-    - At least one of these related triggers is in the PORBLEM state.  
+    - At least one of these related triggers is in the PROBLEM state.  
       In this case panel will be highlighted with the red glow and broken heart icon.
     - All triggers are in the OK state.  
       Panel will be displayed with green heart icon without highlighting.
@@ -38,4 +38,4 @@ calculation.
 
 Also plugin can extract thresholds from trigger expression and set it on graph. You can enable this feature 
 in Data Source config. Thresholds are parts of panel JSON data, so it will be stored in backend if you save dashboard, 
-but plugin marks this thresholds with special tag, so it will be cahnged or deleted if you change it in Zabbix.
+but plugin marks this thresholds with special tag, so it will be changed or deleted if you change it in Zabbix.