diff --git a/session.vim b/session.vim
index 4b9dcb72c1..6b8878b84d 100644
--- a/session.vim
+++ b/session.vim
@@ -14,6 +14,7 @@ let g:syntastic_cpp_include_dirs = [
 let g:syntastic_c_include_dirs = g:syntastic_cpp_include_dirs
 
 set wildignore+=resources/viewer/mathjax/**
+set wildignore+=build/**
 
 fun! CalibreLog()
     " Setup buffers to edit the calibre changelog and version info prior to