diff --git a/README.md b/README.md
index 5fb7f729d..da179c919 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ On the C64 and the C128 there are two supported Ethernet devices:
 On the Apple //e there are three supported Ethernet cards:
 - The [Uthernet](https://web.archive.org/web/20150323031638/http://a2retrosystems.com/products.htm) - emulated by [AppleWin](https://github.com/AppleWin/AppleWin) and [GSport](https://david-schmidt.github.io/gsport/)
 - The [LANceGS](https://web.archive.org/web/20010331001718/http://lancegs.a2central.com:80/)
-- The [Uthernet II](http://a2retrosystems.com/products.htm)
+- The [Uthernet II](https://a2retrosystems.com/products.htm)
 
 On the ATARI XL there are two supported Ethernet devices:
 - The [Dragon Cart](https://www.atari8ethernet.com/) - emulated by [Altirra](http://www.virtualdub.org/altirra.html)