diff --git a/source/_integrations/sms.markdown b/source/_integrations/sms.markdown
index 252a894c92c..5c12313fcf7 100644
--- a/source/_integrations/sms.markdown
+++ b/source/_integrations/sms.markdown
@@ -114,7 +114,7 @@ bus 000 device 002: ID 1232:15ca
 
 Identify the brand for your GSM modem, copy the `brand_Id` and `product_id` (In this case `brand_id = 12d1` and `product_Id = 15ca`)
 
-Set this content in file `udev\10-gsm-modem.rules` in the configuration USB:
+Set this content in file `udev\10-gsm-modem.rules` in the [configuration USB](https://github.com/home-assistant/operating-system/blob/master/Documentation/configuration.md#automatic):
 (Replace `brand_Id` and `product_id` for the numbers reported by `lsusb`)
 
 ```bash