diff --git a/iptvtools/constants/defaults.py b/iptvtools/constants/defaults.py
index a818853..6558935 100644
--- a/iptvtools/constants/defaults.py
+++ b/iptvtools/constants/defaults.py
@@ -13,7 +13,7 @@
 LOG_LEVEL = 'INFO'
 MIN_HEIGHT = 0
 OUTPUT = 'iptvtools.m3u'
-SORT_KEYS = ['tvg-id', 'height', 'title']
+SORT_KEYS = ['group-title', 'tvg-id', 'height', 'title']
 TEMPLATES = []
 TIMEOUT = 10
 UDPXY = None
diff --git a/iptvtools/constants/helps.py b/iptvtools/constants/helps.py
index 74e769f..17ea900 100644
--- a/iptvtools/constants/helps.py
+++ b/iptvtools/constants/helps.py
@@ -46,7 +46,7 @@
 )
 SORT_KEYS = (
     'List of keys to sort the channels. Valid options currently supported '
-    'are `tvg-id`, `height` and `title`.'
+    'are `group-title`, `tvg-id`, `height` and `title`.'
 )
 TEMPLATES = (
     'Template m3u files/urls with well-maintained channel information to '
diff --git a/iptvtools/models.py b/iptvtools/models.py
index aef212f..27cabcb 100644
--- a/iptvtools/models.py
+++ b/iptvtools/models.py
@@ -168,4 +168,6 @@ def __custom_sort(self, url):
                 res.append(entry.get(key, ''))
             elif key == 'tvg-id':
                 res.append(int(entry['params'].get(key) or sys.maxsize))
+            elif key == 'group-title':
+                res.append(entry['params'].get(key) or '')
         return res
diff --git a/iptvtools/parsers.py b/iptvtools/parsers.py
index 8a032f4..85bdab7 100644
--- a/iptvtools/parsers.py
+++ b/iptvtools/parsers.py
@@ -21,8 +21,8 @@ def parse_content_to_lines(content):
     if os.path.isfile(content):
         fp = open(content, encoding='utf-8')
     else:
-        fp = tempfile.TemporaryFile()
-        fp.write(requests.get(content))
+        fp = tempfile.TemporaryFile(mode='w+t')
+        fp.write(requests.get(content).text)
         fp.seek(0)
     for line in fp:
         yield re.sub(r'[^\S ]+', '', line.strip())