diff --git a/src/js/components/actions/index.jsx b/src/js/components/actions/index.jsx
index 4d0dab7..74a73e0 100644
--- a/src/js/components/actions/index.jsx
+++ b/src/js/components/actions/index.jsx
@@ -2,7 +2,7 @@ import React from 'react'
 
 const Actions = ({ filter, filterFiles, onFullWidth, onOptions, onClose }) => (
   <div className='actions'>
-    <input type='text' value={filter} className='actions-filter' placeholder='Type to filter files' onChange={filterFiles} />
+    <input type='text' value={filter} className='actions-filter' placeholder='Type to filter files (prefix ! to ignore)' onChange={filterFiles} />
 
     <div className='actions-small-button'>
       <button onClick={onFullWidth} className='full-width-button' title='Toggle full width mode'>
diff --git a/src/js/lib.js b/src/js/lib.js
index e459cd0..5b4b5ad 100644
--- a/src/js/lib.js
+++ b/src/js/lib.js
@@ -80,6 +80,10 @@ const filterItem = (item, filter) => {
     return true
   }
 
+  if (filter[0] === '!') {
+    return item && item.toLowerCase().indexOf(filter.substr(1).toLowerCase()) < 0
+  }
+
   return item && item.toLowerCase().indexOf(filter.toLowerCase()) > -1
 }