diff --git a/source/_integrations/radiotherm.markdown b/source/_integrations/radiotherm.markdown
index 408c1b565ae..c87edb9bbc1 100644
--- a/source/_integrations/radiotherm.markdown
+++ b/source/_integrations/radiotherm.markdown
@@ -8,7 +8,7 @@ ha_iot_class: Local Polling
 ha_release: 0.7.6
 ---
 
-The `radiotherm` climate platform let you control a thermostat from [Radio Thermostat](http://www.radiothermostat.com/) or [3M Filtrete](http://www.radiothermostat.com/filtrete/products/). Your thermostat must have the Wi-Fi module installed and connected to your network.
+The `radiotherm` climate platform let you control a thermostat from [Radio Thermostat](http://www.radiothermostat.com/) or [3M Filtrete](https://www.filtrete.com/). Your thermostat must have the Wi-Fi module installed and connected to your network.
 
 The underlying library supports: