diff --git a/.htaccess b/.htaccess
index cdfed3f3d194..16193a2a0492 100644
--- a/.htaccess
+++ b/.htaccess
@@ -3,7 +3,7 @@
 #
 
 # Protect files and directories from prying eyes.
-<FilesMatch "(\.(engine|inc|module|sh|sql|theme|tpl|xtmpl)|code-style\.pl|Entries.*|Repository|Root)$">
+<FilesMatch "(\.(engine|inc|install|module|sh|.*sql|theme|tpl|xtmpl)|code-style\.pl|Entries.*|Repository|Root)$">
   Order deny,allow
   Deny from all
 </FilesMatch>