diff --git a/CHANGES.md b/CHANGES.md
index cb6fed00..85632875 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -16,6 +16,11 @@
 
 
 
+### 0.16.9 (2018-05-17 15:30:00 UTC)
+
+* Fix authorisation issue affecting some providers
+
+
 ### 0.16.8 (2018-05-17 02:00:00 UTC)
 
 * Fix changing master id via search method
diff --git a/sickbeard/providers/generic.py b/sickbeard/providers/generic.py
index 9b8a63bc..2ffae9e5 100644
--- a/sickbeard/providers/generic.py
+++ b/sickbeard/providers/generic.py
@@ -1552,6 +1552,7 @@ class TorrentProvider(GenericProvider):
                     return False
 
         passfield, userfield = None, None
+        post_params = isinstance(post_params, type({})) and post_params or {}
         if not url:
             if hasattr(self, 'urls'):
                 url = self.urls.get('login_action')
@@ -1562,7 +1563,6 @@ class TorrentProvider(GenericProvider):
                     if self.should_skip() or None is response:
                         return False
                     try:
-                        post_params = isinstance(post_params, type({})) and post_params or {}
                         form = 'form_tmpl' in post_params and post_params.pop('form_tmpl')
                         if form:
                             form = re.findall(