diff --git a/doc/useful_addresses.html b/doc/useful_addresses.html
index e3173068..72bade7c 100644
--- a/doc/useful_addresses.html
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@@ -135,6 +135,7 @@ An article on the 3D Hardware site.
NTC Thermistor Guide
A comprehensive description of the physics and mathematics
of NTC Thermistors
+