diff --git a/static/js/potd.js b/static/js/potd.js
index 8bc2530..67286db 100644
--- a/static/js/potd.js
+++ b/static/js/potd.js
@@ -88,7 +88,8 @@ function parse_list_file_name(data) {
     }
 
     var filenames = [];
-    while ((match = /\*\s*\[\[:File:(.*?)\]\]/g.exec(content)) !== null) {
+    var regexp = /\*\s*\[\[:File:(.*?)\]\]/g;
+    while ((match = regexp.exec(content)) !== null) {
         filenames.push(match[1]);
     }
     var filename = filenames[Math.floor(Math.random() * filenames.length)];