diff --git a/src/directives/if.js b/src/directives/if.js
index 6a3714c5bf6..d6d1e9ad57a 100644
--- a/src/directives/if.js
+++ b/src/directives/if.js
@@ -90,7 +90,7 @@ module.exports = {
       var next
       while (next !== end) {
         next = cur.nextSibling
-        if (cur.contains(c.$el)) {
+        if (cur.contains && cur.contains(c.$el)) {
           return true
         }
         cur = next