diff --git a/api/media/formidable.mjs b/api/media/formidable.mjs
index 71d7e1e..ebb0eaf 100644
--- a/api/media/formidable.mjs
+++ b/api/media/formidable.mjs
@@ -47,7 +47,7 @@ export function uploadFile(ctx, siteName, noprefix = false) {
                               .replace(/&/g, 'and')
                               .replace(/'/g, '')
                               .replace(/"/g, '')
-                              .replace(/?/g, '')
+                              .replace(/\?/g, '')
 
       Object.keys(fields).forEach(function(key) {
         try {