diff --git a/session.vim b/session.vim
index 7f59ec142f..1622aab9f2 100644
--- a/session.vim
+++ b/session.vim
@@ -19,6 +19,7 @@ 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+=resources/rapydscript/lib/*
 set wildignore+=build/*
 set wildignore+=dist/*
 set wildignore+=manual/generated/*