diff --git a/nixos/modules/services/misc/mautrix-telegram.nix b/nixos/modules/services/misc/mautrix-telegram.nix
index 78a42fbb574b..c5e8a5b85ec2 100644
--- a/nixos/modules/services/misc/mautrix-telegram.nix
+++ b/nixos/modules/services/misc/mautrix-telegram.nix
@@ -125,7 +125,7 @@ in {
         if [ ! -f '${registrationFile}' ]; then
           ${pkgs.mautrix-telegram}/bin/mautrix-telegram \
             --generate-registration \
-            --base-config='${pkgs.mautrix-telegram}/example-config.yaml' \
+            --base-config='${pkgs.mautrix-telegram}/${pkgs.mautrix-telegram.pythonModule.sitePackages}/mautrix_telegram/example-config.yaml' \
             --config='${settingsFile}' \
             --registration='${registrationFile}'
         fi