diff --git a/server/index.js b/server/index.js
index f1705d6..8dbde83 100644
--- a/server/index.js
+++ b/server/index.js
@@ -446,7 +446,15 @@ const initTables = async () => {
             await db.query(insert, ['cctv', 'CCTV', false, null]);
         } else {
             // One-time update: Rename 'monitoring' code to 'cctv' (migration)
-            await db.query("UPDATE system_modules SET code = 'cctv' WHERE code = 'monitoring'");
+            // Use subquery or check if cctv exists to avoid ER_DUP_ENTRY
+            const [cctvExists] = await db.query("SELECT 1 FROM system_modules WHERE code = 'cctv'");
+            if (cctvExists.length > 0) {
+                // If cctv already exists, just remove monitoring if it's there
+                await db.query("DELETE FROM system_modules WHERE code = 'monitoring'");
+            } else {
+                // If cctv doesn't exist, try renaming monitoring
+                await db.query("UPDATE system_modules SET code = 'cctv' WHERE code = 'monitoring'");
+            }
         }
 
         console.log('✅ Tables Initialized');