diff --git a/doc/rpm-build/post_install.php b/doc/rpm-build/post_install.php
index 722f878c00..dcc0e23eed 100755
--- a/doc/rpm-build/post_install.php
+++ b/doc/rpm-build/post_install.php
@@ -221,7 +221,7 @@ foreach(array('php','source_dir','data_dir','setup-cli') as $name)
 {
 	if (!file_exists($config[$name])) bail_out(1,$config[$name].' not found!');
 }
-$setup_cli = $config['php'].' -d memory_limit=64M '.$config['setup-cli'];
+$setup_cli = $config['php'].' -d memory_limit=256M '.$config['setup-cli'];
 
 if (!file_exists($config['header']) || filesize($config['header']) < 200)	// default header redirecting to setup is 147 bytes
 {