diff --git a/gluon/contrib/autolinks.py b/gluon/contrib/autolinks.py
index 23e9ed10..32d215a8 100644
--- a/gluon/contrib/autolinks.py
+++ b/gluon/contrib/autolinks.py
@@ -93,7 +93,7 @@ def video(url):
 
 
 def googledoc_viewer(url):
-    return '<iframe src="http://docs.google.com/viewer?url=%s&embedded=true" style="max-width:100%%"></iframe>' % urllib.quote(url)
+    return '<iframe src="https://docs.google.com/viewer?url=%s&embedded=true" style="max-width:100%%"></iframe>' % urllib.quote(url)
 
 
 def web2py_component(url):