diff --git a/pywb/static/wombat.js b/pywb/static/wombat.js
index bc361250..0e6d8327 100644
--- a/pywb/static/wombat.js
+++ b/pywb/static/wombat.js
@@ -708,11 +708,11 @@ WB_wombat_init = (function() {
     }
 
     //============================================
-    function wombat_init(replay_prefix, capture_date, orig_scheme, orig_host, timestamp) {
+    function wombat_init(replay_prefix, capture_date, orig_scheme, orig_host, timestamp, mod) {
         wb_replay_prefix = replay_prefix;
         
         if (wb_replay_prefix) {
-            wb_replay_date_prefix = replay_prefix + capture_date + "/";
+            wb_replay_date_prefix = replay_prefix + capture_date + mod + "/";
             
             if (capture_date.length > 0) {
                 wb_capture_date_part = "/" + capture_date + "/";
diff --git a/pywb/webapp/handlers.py b/pywb/webapp/handlers.py
index b32cc2ad..2c7962cc 100644
--- a/pywb/webapp/handlers.py
+++ b/pywb/webapp/handlers.py
@@ -74,8 +74,8 @@ class SearchPageWbUrlHandler(WbUrlHandler):
 
         return self.handle_request(wbrequest)
 
-    def get_top_frame_params(self, wbrequest):
-        embed_url = wbrequest.wb_url.to_str(mod='')
+    def get_top_frame_params(self, wbrequest, mod=''):
+        embed_url = wbrequest.wb_url.to_str(mod=mod)
 
         if wbrequest.wb_url.timestamp:
             timestamp = wbrequest.wb_url.timestamp