diff --git a/src/query/matches.js b/src/query/matches.js
index 37aad94..3b8fc3f 100644
--- a/src/query/matches.js
+++ b/src/query/matches.js
@@ -2,21 +2,26 @@
 import canUseDOM from '../util/inDOM'
 import qsa from './querySelectorAll'
 
-let matches;
-if (canUseDOM) {
-  let body = document.body
-  let nativeMatch = body.matches
-                 || body.matchesSelector
-                 || body.webkitMatchesSelector
-                 || body.mozMatchesSelector
-                 || body.msMatchesSelector;
-
-  matches = nativeMatch
-    ? (node, selector) => nativeMatch.call(node, selector)
-    : ie8MatchesSelector
-}
+let matchesCache;
+
+export default function matches(node, selector) {
+  if (!matchesCache && canUseDOM) {
+    let body = document.body
+    let nativeMatch = body.matches
+                   || body.matchesSelector
+                   || body.webkitMatchesSelector
+                   || body.mozMatchesSelector
+                   || body.msMatchesSelector;
 
-export default matches
+    matchesCache = nativeMatch
+      ? (node, selector) => nativeMatch.call(node, selector)
+      : ie8MatchesSelector
+  }
+
+  return matchesCache ?
+    matchesCache(node, selector) :
+    null;
+}
 
 function ie8MatchesSelector(node, selector) {
   var matches = qsa(node.document || node.ownerDocument, selector)