diff --git a/4chan_x.user.js b/4chan_x.user.js
index 9b15de2c0..ad0a4d322 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -1891,8 +1891,7 @@
           }
         } else if (input.name === 'Interval') {
           $.on(input, 'change', function() {
-            if ((val = parseInt(this.value)) < 15) val = 15;
-            return conf['Interval'] = this.value = val;
+            return conf['Interval'] = this.value = parseInt(this.value) || conf['Interval'];
           });
           $.on(input, 'change', $.cb.value);
         } else if (input.type === 'button') {
diff --git a/script.coffee b/script.coffee
index 222360b43..c1692e92c 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1469,10 +1469,7 @@ updater =
           $.on input, 'click', updater.cb.autoUpdate
           updater.cb.autoUpdate.call input
       else if input.name is 'Interval'
-        $.on input, 'change', ->
-          if (val = parseInt @value) < 15
-            val = 15
-          conf['Interval'] = @value = val
+        $.on input, 'change', -> conf['Interval'] = @value = parseInt(@value) or conf['Interval']
         $.on input, 'change', $.cb.value
       else if input.type is 'button'
         $.on input, 'click', updater.update