diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 4c9d15ac67..64fb8e9da6 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -231,7 +231,7 @@ abstract class RegisterMappingsPass implements CompilerPassInterface
             }
         }
 
-        throw new ParameterNotFoundException('None of the managerParameters resulted in a valid name');
+        throw new ParameterNotFoundException('Could not determine the Doctrine manager. Either Doctrine is not configured or a bundle is misconfigured.');
     }
 
     /**