diff --git a/lib/filter.js b/lib/filter.js
index 06f3389..4d24dd4 100644
--- a/lib/filter.js
+++ b/lib/filter.js
@@ -59,8 +59,8 @@ function _object(obj, key, mask) {
 function _array(object, key, mask) {
   var ret = [], arr = object[key]
     , i, l, obj, maskedObj
-  if (util.isEmpty(arr)) return arr
   if (!util.isArray(arr)) return _properties(arr, mask)
+  if (util.isEmpty(arr)) return arr
   for (i = 0, l = arr.length; i < l; i++) {
     obj = arr[i]
     maskedObj = _properties(obj, mask)
diff --git a/test/index-test.js b/test/index-test.js
index 7a1a744..04534ad 100644
--- a/test/index-test.js
+++ b/test/index-test.js
@@ -110,6 +110,10 @@ tests = [{
     m: 'i'
   , o: [{i: 1, o: 2}, {i: 2, o: 2}]
   , e: [{i: 1}, {i: 2}]
+}, {
+    m: 'foo(bar)'
+  , o: { foo: 1234 }
+  , e: null
 }]
 
 describe('json-mask', function () {