diff --git a/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php b/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
index 0879a0459087c..c013062d549a4 100644
--- a/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
+++ b/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
@@ -55,7 +55,14 @@ public function getTypes(DocType $varType)
 
         $varTypes = [];
         for ($typeIndex = 0; $varType->has($typeIndex); ++$typeIndex) {
-            $varTypes[] = (string) $varType->get($typeIndex);
+            $nestedVarType = $varType->get($typeIndex);
+
+            if ($nestedVarType instanceof Nullable) {
+                $varTypes[] = (string) $nestedVarType->getActualType();
+                $nullable = true;
+            } else {
+                $varTypes[] = (string) $nestedVarType;
+            }
         }
 
         // If null is present, all types are nullable