diff --git a/plugins/fileManager/handlers/PHP/common.php b/plugins/fileManager/handlers/PHP/common.php
index f3185fca..a2571246 100644
--- a/plugins/fileManager/handlers/PHP/common.php
+++ b/plugins/fileManager/handlers/PHP/common.php
@@ -112,6 +112,7 @@ function json_response ($json, $exit = true) {
 		$json = json_encode($json);
 	}
 	header("Content-type: application/json; charset=utf-8");
+	header("Cache-Control: no-cache, must-revalidate");
 	echo $json;
 
 	if($exit) {