diff --git a/cpu/6502/README.md b/cpu/6502/README.md
index 58a39ff4c..daa3eea92 100644
--- a/cpu/6502/README.md
+++ b/cpu/6502/README.md
@@ -2,7 +2,7 @@
 ====
 
 The cpu/6502/ directory is used for targeting 6502-based machines using the
-cc65 compiler [http://cc65.github.io/cc65/](http://cc65.github.io/cc65/).
+cc65 compiler [https://cc65.github.io/](https://cc65.github.io/).
 
 The Contiki network configuration for 6502-based targets is loaded from a
 binary configuration file (by default named contiki.cfg). It has the following