diff --git a/oauth2/__init__.py b/oauth2/__init__.py
index 835270e3..3b9b3dcf 100644
--- a/oauth2/__init__.py
+++ b/oauth2/__init__.py
@@ -648,7 +648,7 @@ def request(self, uri, method="GET", body='', headers=None,
                 DEFAULT_POST_CONTENT_TYPE)
 
         is_form_encoded = \
-            headers.get('Content-Type') == 'application/x-www-form-urlencoded'
+            ((headers.get('Content-Type') == 'application/x-www-form-urlencoded') and (method == "POST"))
 
         if is_form_encoded and body:
             parameters = parse_qs(body)