diff --git a/nixos/modules/services/matrix/matrix-alertmanager.nix b/nixos/modules/services/matrix/matrix-alertmanager.nix
index 89ff4dfb2324..6d588a1c78cd 100644
--- a/nixos/modules/services/matrix/matrix-alertmanager.nix
+++ b/nixos/modules/services/matrix/matrix-alertmanager.nix
@@ -116,7 +116,9 @@ in
       };
 
       script = ''
+        # shellcheck disable=SC2155
         export APP_ALERTMANAGER_SECRET=$(cat "''${CREDENTIALS_DIRECTORY}/secret")
+        # shellcheck disable=SC2155
         export MATRIX_TOKEN=$(cat "''${CREDENTIALS_DIRECTORY}/token")
         exec ${lib.getExe cfg.package}
       '';