diff --git a/dav_svn.conf b/dav_svn.conf
index a508a5c..b313ed9 100644
--- a/dav_svn.conf
+++ b/dav_svn.conf
@@ -1,5 +1,6 @@
 LoadModule dav_svn_module /usr/lib/apache2/mod_dav_svn.so
 LoadModule authz_svn_module /usr/lib/apache2/mod_authz_svn.so
+LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
 
 <VirtualHost 127.0.0.1:8000>
     <Location />