diff --git a/core/ajax/share.php b/core/ajax/share.php
index 3907cd43b0a1..7b7001b06082 100644
--- a/core/ajax/share.php
+++ b/core/ajax/share.php
@@ -179,6 +179,11 @@
 				&& isset($_GET['itemSource'])
 				&& isset($_GET['checkReshare'])
 				&& isset($_GET['checkShares'])) {
+
+			        $reshare = false;
+			
+			        /* KUBA: disable the reshare check altogether because we do not allow re-sharing in cernbox so this call is redundant*/
+				/*
 				if ($_GET['checkReshare'] == 'true') {
 					$reshare = OCP\Share::getItemSharedWithBySource(
 						$_GET['itemType'],
@@ -190,6 +195,8 @@
 				} else {
 					$reshare = false;
 				}
+				*/ /* end of KUBA patch */
+
 				if ($_GET['checkShares'] == 'true') {
 					$shares = OCP\Share::getItemShared(
 						$_GET['itemType'],