diff --git a/roles/usb_lib/files/upload/upload2usb.php b/roles/usb_lib/files/upload/upload2usb.php
index 31623ea6f..f2b3aa883 100644
--- a/roles/usb_lib/files/upload/upload2usb.php
+++ b/roles/usb_lib/files/upload/upload2usb.php
@@ -55,9 +55,10 @@ function getFileCount ($folder_path) {
 //check if file mimetype is acceptable for upload
 function isFileMimeTypeAcceptable ($file) {
 	 $mimetype = strtolower(mime_content_type($file));
-	 $invalid_mimetypes_str = array ("compress", "octet", "xml", "zip");
+	 $invalid_mimetypes_str = array ("compress", "image/svg+xml", "octet", "text/xml", "xhtml+xml", "zip");
 	 foreach ($invalid_mimetypes_str as $invalid_mt_str) {
 	 	 if (str_contains($mimetype, $invalid_mt_str)) {
+	            error_log('UPLOAD2USB ERROR - MIMETYPE: ' . $mimetype);
 		    return false;
 		 }
 	 }