diff --git a/doc/www-data.in/_ignore b/doc/www-data.in/_ignore
index c56389fbc08cf699bf2c728c36fede7782f38d9e..b9be31d41127ffe613fc4bd4f32ddd04be85b854 100644
--- a/doc/www-data.in/_ignore
+++ b/doc/www-data.in/_ignore
@@ -5,3 +5,4 @@ CMakeFiles
 cmake_install.cmake
 download.cmake
 Makefile
+.*.swp