diff --git a/4chan_x.js b/4chan_x.js
index 914287c00..469c0145a 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -1843,7 +1843,11 @@
       return _results;
     },
     mouseout: function() {
-      return $.removeClass(d.getElementById(this.hash.slice(1)), 'qphl');
+      var el;
+      if (!(el = d.getElementById(this.hash.slice(1)))) {
+        return;
+      }
+      return $.removeClass(el, 'qphl');
     },
     mouseover: function(e) {
       var el, id, qp, quote, replyID, req, threadID, _i, _len, _ref;
diff --git a/script.coffee b/script.coffee
index 2c9e5603b..1a71eb5ef 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1465,7 +1465,8 @@ quotePreview =
       $.bind quote, 'mouseout',  ui.hoverend
       $.bind quote, 'mouseout',  quotePreview.mouseout
   mouseout: ->
-    $.removeClass d.getElementById(@hash[1..]), 'qphl'
+    return unless el = d.getElementById @hash[1..]
+    $.removeClass el, 'qphl'
   mouseover: (e) ->
     return unless id = @hash[1..]
     qp = $ '#qp'