diff --git a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
index 4224ded7d9..9494333a2e 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
@@ -131,7 +131,9 @@ class PhpDocExtractor implements PropertyDescriptionExtractorInterface, Property
         $types = array();
         /** @var DocBlock\Tags\Var_|DocBlock\Tags\Return_|DocBlock\Tags\Param $tag */
         foreach ($docBlock->getTagsByName($tag) as $tag) {
-            $types = array_merge($types, $this->phpDocTypeHelper->getTypes($tag->getType()));
+            if ($tag && null !== $tag->getType()) {
+                $types = array_merge($types, $this->phpDocTypeHelper->getTypes($tag->getType()));
+            }
         }
 
         if (!isset($types[0])) {
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractors/PhpDocExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractors/PhpDocExtractorTest.php
index 9cc0a8d6e1..f16e29242c 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractors/PhpDocExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractors/PhpDocExtractorTest.php
@@ -40,6 +40,11 @@ class PhpDocExtractorTest extends TestCase
         $this->assertSame($longDescription, $this->extractor->getLongDescription('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property));
     }
 
+    public function testParamTagTypeIsOmitted()
+    {
+        $this->assertNull($this->extractor->getTypes(OmittedParamTagTypeDocBlock::class, 'omittedType'));
+    }
+
     /**
      * @dataProvider typesWithCustomPrefixesProvider
      */
@@ -176,3 +181,13 @@ class EmptyDocBlock
 {
     public $foo;
 }
+
+class OmittedParamTagTypeDocBlock
+{
+    /**
+     * @param $omittedTagType
+     */
+    public function setOmittedType(array $omittedTagType)
+    {
+    }
+}