diff --git a/lib/upgradelib.php b/lib/upgradelib.php
index 0c2349beb94..8cc30c3de82 100644
--- a/lib/upgradelib.php
+++ b/lib/upgradelib.php
@@ -2241,7 +2241,7 @@ function check_database_storage_engine(environment_results $result) {
 function check_slasharguments(environment_results $result){
     global $CFG;
 
-    if (empty($CFG->slasharguments)) {
+    if (!during_initial_install() && empty($CFG->slasharguments)) {
         $result->setInfo('slasharguments');
         $result->setStatus(false);
         return $result;