diff --git a/doc/rpm-build/apache.conf b/doc/rpm-build/apache.conf
index 91522f5895..a92d60cde8 100644
--- a/doc/rpm-build/apache.conf
+++ b/doc/rpm-build/apache.conf
@@ -22,7 +22,8 @@ Alias /egroupware /usr/share/egroupware
   php_flag short_open_tag on
   php_flag track_vars on
   php_flag display_errors off
-  php_value error_reporting 'E_ALL & ~E_NOTICE'
+  # E_ALL & ~E_NOTICE = 8191 - 8 = 8183
+  php_value error_reporting 8183
   php_value max_execution_time 90
   php_admin_value mbstring.func_overload 7
   php_value memory_limit 64M