diff --git a/simplexalerts/index.md b/simplexalerts/index.md
index 9cee9cb..1620460 100644
--- a/simplexalerts/index.md
+++ b/simplexalerts/index.md
@@ -27,10 +27,12 @@ Simple threshold-based alert are reactive by nature, but their automated monitor
 
 - Threshold-based: a [SMARTCTL](https://en.wikipedia.org/wiki/Smartctl) alert creating a notification when any hard drive within your infrastructure crosses a pre-failure threshold
 
+~~~
     smartctl_device_attribute{attribute_flags_long=~".*prefailure.*", attribute_value_type="value"} 
     <= 
     on (device, attribute_id, instance, attribute_name) 
     smartctl_device_attribute{attribute_flags_long=~".*prefailure.*", attribute_value_type="thresh"}
+~~~
 
 - Statistical (anomaly detection): CPU spike or under-use