diff --git a/session.vim b/session.vim
index 2b35bdf5cf..7f59ec142f 100644
--- a/session.vim
+++ b/session.vim
@@ -16,6 +16,7 @@ let g:syntastic_cpp_include_dirs = [
             \'/usr/include/ImageMagick',
             \]
 let g:syntastic_c_include_dirs = g:syntastic_cpp_include_dirs
+let g:syntastic_python_flake8_exec = 'flake8-python2'
 
 set wildignore+=resources/viewer/mathjax/*
 set wildignore+=build/*