diff --git a/src/DiDom/Query.php b/src/DiDom/Query.php
index 7593e3a..8e0d55d 100644
--- a/src/DiDom/Query.php
+++ b/src/DiDom/Query.php
@@ -40,6 +40,7 @@ public static function compile($expression, $type = self::TYPE_CSS)
 
             if (array_key_exists($expression, static::$compiled)) {
                 $paths[] = static::$compiled[$expression];
+                continue;
             }
 
             static::$compiled[$expression] = static::cssToXpath($expression);
diff --git a/tests/DiDom/QueryTest.php b/tests/DiDom/QueryTest.php
index b1153f5..fd9ca04 100644
--- a/tests/DiDom/QueryTest.php
+++ b/tests/DiDom/QueryTest.php
@@ -7,7 +7,20 @@
 
 class QueryTest extends TestCase
 {
-    public function testSetCompiledException()
+    /**
+     * @dataProvider compiledCssProvider
+     */
+    public function testCompileCssSelector($selector, $xpath)
+    {
+        $this->assertEquals($xpath, Query::compile($selector));
+    }
+
+    public function testCompileXpath()
+    {
+        $this->assertEquals('xpath-expression', Query::compile('xpath-expression', Query::TYPE_XPATH));
+    }
+
+    public function testSetCompiledInvalidArgument()
     {
         $this->setExpectedException('InvalidArgumentException');
 
@@ -29,12 +42,23 @@ public function testGetCompiled()
         Query::setCompiled([]);
 
         $selector = '.post h2';
-        $xpath = "//*[contains(concat(' ', normalize-space(@class), ' '), ' post ')]";
+        $xpath = '//*[contains(concat(" ", normalize-space(@class), " "), " post ")]//h2';
         $compiled = [$selector => $xpath];
 
-        $xpath    = Query::compile($selector);
-        $compiled = Query::getCompiled();
+        Query::compile($selector);
 
         $this->assertEquals($compiled, Query::getCompiled());
     }
+
+    public function compiledCssProvider()
+    {
+        $compiled = [
+            ['h2', '//h2'],
+            ['.post h2', '//*[contains(concat(" ", normalize-space(@class), " "), " post ")]//h2'],
+            ['.post, h2', '//*[contains(concat(" ", normalize-space(@class), " "), " post ")]|//h2'],
+            ['div#layout', "//div[@id='layout']"],
+        ];
+
+        return $compiled;
+    }
 }