diff --git a/xedit/browser.py b/xedit/browser.py
index 5ea67d4..00acae7 100644
--- a/xedit/browser.py
+++ b/xedit/browser.py
@@ -58,6 +58,7 @@ class ExternalEditorView(object):
             r.append('cookie:' + cookie)
         r.append('')
         r.append(fromUnicode(data))
+        r = [str(item) for item in r]
         result = '\n'.join(r)
         self.setHeaders(len(result))
         return result