diff --git a/ftplugin/python/pyflakes.vim b/ftplugin/python/pyflakes.vim
index 5a0b44ce..5cb1107e 100755
--- a/ftplugin/python/pyflakes.vim
+++ b/ftplugin/python/pyflakes.vim
@@ -267,7 +267,7 @@ EOF
                 call setqflist(b:qf_list, 'r')
             else
                 " one pyflakes quickfix window for all buffer
-                call setqflist(b:qf_list, '')
+                call setqflist(b:qf_list, ' ')
                 let s:pyflakes_qf = s:GetQuickFixStackCount()
             endif
         endif