diff --git a/modules/nixos/wifi.nix b/modules/nixos/wifi.nix
index fa4b59b..4c5204e 100644
--- a/modules/nixos/wifi.nix
+++ b/modules/nixos/wifi.nix
@@ -35,6 +35,7 @@
           anonymous_identity="eduroam@uni-hannover.de"
           identity="@eduroam_ident@"
           password="@eduroam_psk@"
+          ca_cert="/etc/ssl/certs/T-TeleSec_GlobalRoot_Class_2.crt"
         '';
         priority = 0;
       };