diff --git a/lib/base.php b/lib/base.php
index f3e2e734d0d58..9ae3e71453fcd 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -242,22 +242,27 @@ public static function checkConfig() {
 		$configFileWritable = is_writable($configFilePath);
 		if (!$configFileWritable && !OC_Helper::isReadOnlyConfigEnabled()
 			|| !$configFileWritable && \OCP\Util::needUpgrade()) {
-
 			$urlGenerator = \OC::$server->getURLGenerator();
 
 			if (self::$CLI) {
 				echo $l->t('Cannot write into "config" directory!')."\n";
 				echo $l->t('This can usually be fixed by giving the webserver write access to the config directory')."\n";
-				echo "\n";
 				echo $l->t('See %s', [ $urlGenerator->linkToDocs('admin-dir_permissions') ])."\n";
+				echo "\n";
+				echo $l->t('Or, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it.')."\n";
+				echo $l->t('See %s', [ $urlGenerator->linkToDocs('admin-config') ])."\n";
 				exit;
 			} else {
+				http_response_code(500);
 				OC_Template::printErrorPage(
 					$l->t('Cannot write into "config" directory!'),
 					$l->t('This can usually be fixed by giving the webserver write access to the config directory. See %s',
-					 [ $urlGenerator->linkToDocs('admin-dir_permissions') ])
+					[ $urlGenerator->linkToDocs('admin-dir_permissions') ]) . '. '
+					. $l->t('Or, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it. See %s',
+					[ $urlGenerator->linkToDocs('admin-config') ] )
 				);
 			}
+
 		}
 	}
 
diff --git a/lib/private/legacy/util.php b/lib/private/legacy/util.php
index 3313ccdec9160..4d486fac1665b 100644
--- a/lib/private/legacy/util.php
+++ b/lib/private/legacy/util.php
@@ -727,8 +727,10 @@ public static function checkServer(\OC\SystemConfig $config) {
 				$errors[] = array(
 					'error' => $l->t('Cannot write into "config" directory'),
 					'hint' => $l->t('This can usually be fixed by giving the webserver write access to the config directory. See %s',
-						[$urlGenerator->linkToDocs('admin-dir_permissions')])
-				);
+                    [ $urlGenerator->linkToDocs('admin-dir_permissions') ]) . '. '
+                    . $l->t('Or, if you prefer to keep config.php file read only, set the option "config_is_read_only" to true in it. See %s',
+                    [ $urlGenerator->linkToDocs('admin-config') ] )
+                );
 			}
 		}