diff --git a/README.md b/README.md
index 84de9ee..18f3583 100644
--- a/README.md
+++ b/README.md
@@ -26,8 +26,9 @@ able to resolve your custom domains.
    ```shell
    sudo cp pihole-opnsense-sync.service /etc/systemd/system/pihole-opnsense-sync.service
    ```
-   The service runs as the `pihole:pihole` user.
-5. Enable and start the service:
+   The service is configured to run as the `pihole:pihole` user.
+5. Edit the service file. You might need to modify `--opnsense` and add `--insecure`.
+6. Enable and start the service:
    ```shell
    sudo systemctl enable --now pihole-opnsense-sync
    sleep 2
diff --git a/syncer.py b/syncer.py
index 5ac2571..cf16366 100755
--- a/syncer.py
+++ b/syncer.py
@@ -23,7 +23,7 @@ class WatchdogHandler(FileSystemEventHandler):
 
 
 def file_modified(args):
-    response = requests.get(args.opnsense + "/api/unbound/settings/searchHostOverride", auth=(args.api_key, args.api_secret), verify=args.insecure)
+    response = requests.get(args.opnsense + "/api/unbound/settings/searchHostOverride", auth=(args.api_key, args.api_secret), verify=not args.insecure)
 
     if response.status_code == 200:
         data = response.json()
@@ -40,7 +40,7 @@ def file_modified(args):
 
         for item_ip, item_domain in to_remove:
             item_data = current_overrides_uuid[item_domain]
-            p = requests.post(args.opnsense + f"/api/unbound/settings/delHostOverride/{item_data['uuid']}", auth=(args.api_key, args.api_secret), verify=args.insecure)
+            p = requests.post(args.opnsense + f"/api/unbound/settings/delHostOverride/{item_data['uuid']}", auth=(args.api_key, args.api_secret), verify=not args.insecure)
             if p.status_code != 200:
                 raise Exception(f'Failed to delete item {item_domain}: {p.status_code} - {p.text}')
             else:
@@ -62,13 +62,13 @@ def file_modified(args):
                     'description': f'Synced from Pi-hole {dt_string}'
                 }
             }
-            p = requests.post(args.opnsense + "/api/unbound/settings/addHostOverride", json=p_data, auth=(args.api_key, args.api_secret), verify=args.insecure)
+            p = requests.post(args.opnsense + "/api/unbound/settings/addHostOverride", json=p_data, auth=(args.api_key, args.api_secret), verify=not args.insecure)
             if p.status_code != 200:
                 raise Exception(f'Failed to add item {item_domain}: {p.status_code} - {p.text}')
             else:
                 logger.info(f'Added: {item_domain}')
 
-        p_reload = requests.post(args.opnsense + "/api/unbound/service/reconfigure", auth=(args.api_key, args.api_secret), verify=args.insecure)
+        p_reload = requests.post(args.opnsense + "/api/unbound/service/reconfigure", auth=(args.api_key, args.api_secret), verify=not args.insecure)
         if p_reload.status_code != 200:
             raise Exception(f'Failed to reload service: {p_reload.status_code} - {p_reload.text}')
         else: