diff --git a/module.nix b/module.nix
index cf2cda2..afd1c17 100644
--- a/module.nix
+++ b/module.nix
@@ -139,8 +139,7 @@ in
         serviceConfig = {
           loadCredentials = ["client-secret:${oauthClientSecretFP}"];
           ExecStart = lib.mkForce ''
-            export CLIENT_SECRET=$(cat $CREDENTIALS_DIRECTORY/client-secret)
-            ${config.services.mastodon.package}/bin/puma -C config/puma.rb`
+            CLIENT_SECRET=$(cat $CREDENTIALS_DIRECTORY/client-secret) ${config.services.mastodon.package}/bin/puma -C config/puma.rb`
           '';
         };
         environment = {