diff --git a/docs/install.rst b/docs/install.rst
index 39260342de14939fee3870bf7e9f24ffb85f4f47..17144e82a3b8b7c796e610ca8deb5b02196489b4 100644
--- a/docs/install.rst
+++ b/docs/install.rst
@@ -48,7 +48,7 @@ Add the apt-dev GPG key to the list of trusted keys:
 
 .. code-block:: console
 
-   # curl https://dev.grnet.gr/files/apt-grnetdev.pub | apt-key add -
+   # wget --no-check-certificate  -qO-  http://dev.grnet.gr/files/apt-grnetdev.pub | apt-key add -
 
 And resynchronize the package index files from their sources: