diff --git a/src/Symfony/Component/Translation/DataCollectorTranslator.php b/src/Symfony/Component/Translation/DataCollectorTranslator.php
index b2049d4751..0243d8aa21 100644
--- a/src/Symfony/Component/Translation/DataCollectorTranslator.php
+++ b/src/Symfony/Component/Translation/DataCollectorTranslator.php
@@ -95,7 +95,7 @@ class DataCollectorTranslator implements TranslatorInterface, TranslatorBagInter
      */
     public function getFallbackLocales()
     {
-        if ($this->translator instanceof Translator) {
+        if ($this->translator instanceof Translator || method_exists($this->translator, 'getFallbackLocales')) {
             return $this->translator->getFallbackLocales();
         }
 
diff --git a/src/Symfony/Component/Translation/LoggingTranslator.php b/src/Symfony/Component/Translation/LoggingTranslator.php
index b259df5e0a..85ab3c47f5 100644
--- a/src/Symfony/Component/Translation/LoggingTranslator.php
+++ b/src/Symfony/Component/Translation/LoggingTranslator.php
@@ -95,7 +95,7 @@ class LoggingTranslator implements TranslatorInterface, TranslatorBagInterface
      */
     public function getFallbackLocales()
     {
-        if ($this->translator instanceof Translator) {
+        if ($this->translator instanceof Translator || method_exists($this->translator, 'getFallbackLocales')) {
             return $this->translator->getFallbackLocales();
         }