diff --git a/src/lib/style-transformer.html b/src/lib/style-transformer.html
index caf8ddd710..94775b5589 100644
--- a/src/lib/style-transformer.html
+++ b/src/lib/style-transformer.html
@@ -311,9 +311,7 @@
       },
 
       _transformDocumentSelector: function(selector) {
-        return (selector.match(SCOPE_JUMP) || selector.match(SIMPLE_SELECTOR_SEP) )?
-          this._transformComplexSelector(selector, SCOPE_DOC_SELECTOR) :
-          this._transformSimpleSelector(selector.trim(), SCOPE_DOC_SELECTOR);
+        return this._transformComplexSelector(selector, SCOPE_DOC_SELECTOR);
       },
 
       // For forward compatibility with ShadowDOM v1 and Polymer 2.x,
diff --git a/test/unit/custom-style-transformed.html b/test/unit/custom-style-transformed.html
index 88de82cd79..e0b064c580 100644
--- a/test/unit/custom-style-transformed.html
+++ b/test/unit/custom-style-transformed.html
@@ -21,6 +21,9 @@
       color: rgb(123, 123, 123);
       border: 10px solid black;
     }
+    html, body:not([foo]) * {
+      padding-left: 10px;
+    }
   </style>
 </body>
 <dom-module id="x-styled">
@@ -41,12 +44,19 @@
     Polymer({is: 'x-styled'});
   });
   suite('complicated custom style', function() {
-    test('complicated selector', function() {
-      var el = document.querySelector('x-styled#target');
-      var target = el.$.target;
+    var el, target;
+    suiteSetup(function() {
+      el = document.querySelector('x-styled#target');
+      target = el.$.target;
+    });
+    test('complex selector', function() {
       assert.equal(getComputedStyle(el).getPropertyValue('border-top-width').trim(), '10px');
       assert.equal(getComputedStyle(target).getPropertyValue('border-top-width').trim(), '0px');
       assert.equal(getComputedStyle(target).getPropertyValue('color').trim(), 'rgb(123, 123, 123)');
-    })
+    });
+    test('list of complex selectors', function() {
+      assert.equal(getComputedStyle(el).getPropertyValue('padding-left').trim(), '10px');
+      assert.equal(getComputedStyle(target).getPropertyValue('padding-left').trim(), '0px');
+    });
   })
 </script>
\ No newline at end of file