diff --git a/apps/accounts/utils.py b/apps/accounts/utils.py
index fb3be63a7..ac896f8c0 100644
--- a/apps/accounts/utils.py
+++ b/apps/accounts/utils.py
@@ -16,7 +16,7 @@ class SecretGenerator:
 
     @staticmethod
     def generate_ssh_key():
-        private_key, public_key = ssh_key_gen()
+        private_key, __ = ssh_key_gen()
         return private_key
 
     def generate_password(self):
diff --git a/apps/ops/ansible/inventory.py b/apps/ops/ansible/inventory.py
index 1c5fd17fc..1426ffc01 100644
--- a/apps/ops/ansible/inventory.py
+++ b/apps/ops/ansible/inventory.py
@@ -1,6 +1,7 @@
 # ~*~ coding: utf-8 ~*~
 import json
 import os
+import re
 from collections import defaultdict
 
 from django.utils.translation import gettext as _
@@ -159,7 +160,7 @@ class JMSInventory:
         protocol = self.get_primary_protocol(ansible_config, protocols)
 
         tp, category = asset.type, asset.category
-        name = asset.name.replace(' ', '_').replace('[', '_').replace(']', '_')
+        name = re.sub(r'[ \[\]/]', '_', asset.name)
         secret_info = {k: v for k, v in asset.secret_info.items() if v}
         host = {
             'name': name,