diff --git a/setup/installer/__init__.py b/setup/installer/__init__.py
index 3d6e763ab0..4ebfb35cc7 100644
--- a/setup/installer/__init__.py
+++ b/setup/installer/__init__.py
@@ -15,7 +15,7 @@ from setup.build_environment import BUILD_HOST, PROJECT
 BASE_RSYNC = ['rsync', '-av', '--delete', '--force']
 EXCLUDES = []
 for x in [
-    '/src/calibre/plugins', '/manual', '/translations', '/build', '/dist', '/imgsrc', '/format_docs'
+    '/src/calibre/plugins', '/manual', '/translations', '/build', '/dist', '/imgsrc', '/format_docs', '/.build-cache',
     '.bzr', '.git', '.build', '.svn',  '*.pyc', '*.pyo', '*.swp', '*.swo', '*.pyj-cached']:
     EXCLUDES.extend(['--exclude', ('/calibre' + x) if x.startswith('/') else x])
 SAFE_EXCLUDES = ['"%s"'%x if '*' in x else x for x in EXCLUDES]