diff --git a/main.js b/main.js
index d6cdc9b..8fe4737 100644
--- a/main.js
+++ b/main.js
@@ -8,6 +8,8 @@ if (!USER_TOKEN) {
     process.exit(1);
 }
 
+const PERIOD = process.env.PERIOD; // Time in days: int
+
 const INSTANCE_URL = process.env.INSTANCE_URL;
 const API_BASE = `${INSTANCE_URL}/api`;
 
@@ -49,14 +51,16 @@ async function main() {
 
         const users = response.data;
         const now = new Date();
-        const fiveDaysAgo = new Date(now - 5 * 24 * 60 * 60 * 1000);
+        const timeAgo = new Date(now - PERIOD * 24 * 60 * 60 * 1000);
 
         const usersToDelete = users.filter(user => {
             const createdAt = new Date(user.createdAt);
             const updatedAt = new Date(user.updatedAt);
-            return user.notesCount === 0 && 
-                   createdAt < fiveDaysAgo && 
-                   updatedAt < fiveDaysAgo;
+            const excludedUsers = ['instance.actor', 'relay.actor'];
+            return user.notesCount === 0 &&
+                   createdAt < timeAgo &&
+                   updatedAt < timeAgo &&
+                   !excludedUsers.includes(user.username)
         });
 
         console.log(`Found ${usersToDelete.length} users matching criteria (no posts, not updated, and older than 5 days)`);
@@ -71,7 +75,7 @@ async function main() {
         console.log();
 
         const confirmed = await askForConfirmation(`Are you sure you want to delete ${usersToDelete.length} users?`);
-        
+
         if (!confirmed) {
             console.log('Operation cancelled by user');
             rl.close();