diff --git a/www-api/app/Controllers/WrenchMedia.php b/www-api/app/Controllers/WrenchMedia.php
index 9e5749c5..8d28f523 100644
--- a/www-api/app/Controllers/WrenchMedia.php
+++ b/www-api/app/Controllers/WrenchMedia.php
@@ -153,7 +153,8 @@ class WrenchMedia extends BaseController
 
        log_message('critical', "BEFORE CACHE*********");
        if (isset($selectedFile) && $selectedFile!=''){
-           $endpoint = "SECUREFILE-".$selectedFile;
+           $selectedFile_CACHE_KEY  = str_replace("/\/", "_", $selectedFile);
+           $endpoint = "SECUREFILE-".$selectedFile_CACHE_KEY;
            $this->saveCache($endpoint,$out,10000);
        }
        log_message('critical', "AFTER CACHE*********");