diff --git a/univention-ldap/conffiles/etc/ldap/slapd.conf.d/40univention-ldap-server_database b/univention-ldap/conffiles/etc/ldap/slapd.conf.d/40univention-ldap-server_database
index d740833..491498d 100644
--- a/univention-ldap/conffiles/etc/ldap/slapd.conf.d/40univention-ldap-server_database
+++ b/univention-ldap/conffiles/etc/ldap/slapd.conf.d/40univention-ldap-server_database
@@ -78,7 +78,27 @@ for indexcombination in indexcombinations:
 					attribs.append(attr)
 					found_attribs.append(attr)
 	if not attribs==[] and not indexes==[]:
-		print 'index\t%s %s'%(','.join(attribs),','.join(indexes))
+		config_line = 'index\t%s %s' % (','.join(attribs),','.join(indexes))
+		max_length = 2000
+		if len(config_line) > max_length:
+			head = 'index\t '
+			tail = ' %s'%(','.join(indexes))
+			attributes=""
+			for attr in attribs:
+				if not attributes:
+					# regardless of max length we print at least one attribute per index line
+					attributes += '%s' % (attr)
+				else:
+					if len('%s%s,%s%s' % (head, attributes, attr, tail)) > max_length:
+						print '%s%s%s' %(head, attributes, tail)
+						attributes='%s' % (attr)
+					else:
+						attributes += ',%s' % (attr)
+			if attributes:
+				print '%s%s%s' %(head, attributes, tail)
+				attributes=''
+		else:
+			print config_line
 
 print
 for key in configRegistry.get("ldap/limits", "").split(";"):