diff --git a/4chan_x.user.js b/4chan_x.user.js
index d84420db9..7dbe40bdf 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -1997,7 +1997,7 @@
         _results = [];
         for (_i = 0, _len = _ref.length; _i < _len; _i++) {
           s = _ref[_i];
-          if (s[0] !== '#') {
+          if (s && s[0] !== '#') {
             _results.push(s);
           }
         }
diff --git a/script.coffee b/script.coffee
index 4d2d517fe..ab4ac8cff 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1590,7 +1590,7 @@ anonymize =
 
 sauce =
   init: ->
-    sauce.prefixes = (s for s in (conf['flavors'].split '\n') when s[0] != '#')
+    sauce.prefixes = (s for s in (conf['flavors'].split '\n') when s and s[0] != '#')
     sauce.names = (prefix.match(/(\w+)\./)[1] for prefix in sauce.prefixes)
     g.callbacks.push (root) ->
       return if root.className is 'inline'