diff --git a/warden3/contrib/warden_filer/warden_filer.cfg b/warden3/contrib/warden_filer/warden_filer.cfg
index f522778715cb312fe259514d9100476418150e7d..bf6e50c757e978bdb0c3f51e3f3aadf57e5c5fba 100644
--- a/warden3/contrib/warden_filer/warden_filer.cfg
+++ b/warden3/contrib/warden_filer/warden_filer.cfg
@@ -44,7 +44,7 @@
             "nogroup": null,
             "tag": null,
             "notag": ["Honeypot"]
-        }
+        },
         // Optional information about detector to be prepended into Idea Node array
         "node": {
             "Name": "cz.example.warden.test_receiver",
diff --git a/warden3/contrib/warden_filer/warden_filer.py b/warden3/contrib/warden_filer/warden_filer.py
index 13d5b2e49e36f14a7c9103db9e2a5ba607f47d77..bb5207f85317d64509493ece7527b9382ef34cfa 100644
--- a/warden3/contrib/warden_filer/warden_filer.py
+++ b/warden3/contrib/warden_filer/warden_filer.py
@@ -335,7 +335,7 @@ def get_configs():
 
     # Allow inline or external Warden config
     wconfig = config.get("warden", "warden_client.cfg")
-    if isinstance(wconfig, str):
+    if isinstance(wconfig, basestring):
         wconfig = read_cfg(wconfig)
 
     fconfig = config.get(args.func, {})