diff --git a/css-path.js b/css-path.js
index 4b2b3c9..f2f339a 100644
--- a/css-path.js
+++ b/css-path.js
@@ -35,8 +35,14 @@ var trim = require('trim')
         , id = elm.getAttribute('id')
 
       if (id) {
-        list.unshift(tag + '#' + trim(id))
-        return list
+        list.unshift( tag + '#' + trim(id) )
+        var isUnique = rootNode.querySelectorAll(list.join('>')).length === 1
+        if (isUnique){
+         return list
+        } else {
+          list.shift()
+          selector.push('#' + trim(id))
+        }
       }
 
       if (className)
@@ -57,4 +63,4 @@ var trim = require('trim')
 
 module.exports = function (elm, rootNode) {
   return path(elm, rootNode, []).join(' > ')
-}
\ No newline at end of file
+}