diff --git a/docs/configuration/module-config/serial.mdx b/docs/configuration/module-config/serial.mdx
index dff4b573..603c4743 100644
--- a/docs/configuration/module-config/serial.mdx
+++ b/docs/configuration/module-config/serial.mdx
@@ -35,7 +35,7 @@ Available Values:
 - `PROTO` Exposes the Protobuf Client API on this serial port. You can use this to connect from another device. [API Reference](/docs/development/device/client-api)
 - `TEXTMSG` Will send the string received over the serial port as a Text Message for Display on the other devices.
 - `NMEA` Will output a NMEA 0183 Data stream containing the internal GPS or fixed position and other node locations as Waypoints (WPL).
-- `CALTOPO` Will output NMEA 0183 Waypoints (WPL) every 10 seconds for all valid node locations, to be consumed by [CalTopo / SARTopo](https://caltopo.com/)
+- `CALTOPO` Will output NMEA 0183 Waypoints (WPL) every 10 seconds for all valid node locations, to be consumed by [CalTopo / SARTopo](/docs/software/integrations/caltopo.mdx).
 
 ### Receive GPIO Pin