diff --git a/src/fixes/fix_urllib3_warnings.py b/src/fixes/fix_urllib3_warnings.py
index 5df77334..71afa28a 100644
--- a/src/fixes/fix_urllib3_warnings.py
+++ b/src/fixes/fix_urllib3_warnings.py
@@ -1,5 +1,22 @@
 # -*- coding: utf-8 -*-
 from requests.packages import urllib3
+from requests.packages.urllib3 import fields
+import six
 
 def fix():
- urllib3.disable_warnings()
\ No newline at end of file
+ urllib3.disable_warnings()
+ fields.format_header_param=patched_format_header_param
+
+def patched_format_header_param(name, value):
+    if not any(ch in value for ch in '"\\\r\n'):
+        result = '%s="%s"' % (name, value)
+        try:
+            result.encode('ascii')
+        except (UnicodeEncodeError, UnicodeDecodeError):
+            pass
+        else:
+            return result
+    if not six.PY3 and isinstance(value, six.text_type):  # Python 2:
+        value = value.encode('utf-8')
+    value = '%s=%s' % (name, value)
+    return value