diff --git a/Doctrine/Type/NativeDateIntervalType.php b/Doctrine/Type/NativeDateIntervalType.php
index fc341b3ef..7c9375628 100644
--- a/Doctrine/Type/NativeDateIntervalType.php
+++ b/Doctrine/Type/NativeDateIntervalType.php
@@ -30,7 +30,7 @@ class NativeDateIntervalType extends DateIntervalType
         if ($value === null || $value instanceof \DateInterval) {
             return $value;
         }
-        dump($value);
+        
         try {
             $strings = explode(' ', $value);
             
@@ -44,11 +44,9 @@ class NativeDateIntervalType extends DateIntervalType
                 $intervalSpec .= $this->convertEntry($strings);
             } while (next($strings) !== FALSE);
             
-            dump($intervalSpec);
-            
             return new \DateInterval($intervalSpec);
         } catch (\Exception $exception) {
-            throw $this->createConversionException($value);
+            throw $this->createConversionException($value, $exception);
         }
     }
     
@@ -70,7 +68,7 @@ class NativeDateIntervalType extends DateIntervalType
                     $unit = 'D';
                     break;
                 default:
-                    throw $this->createConversionException($value);
+                    throw $this->createConversionException(implode('', $strings));
             }
             
             return $current.$unit;
@@ -86,7 +84,7 @@ class NativeDateIntervalType extends DateIntervalType
         }
     }
     
-    protected function createConversionException($value)
+    protected function createConversionException($value, $exception = null)
     {
         return ConversionException::conversionFailedFormat($value, $this->getName(), 'xx year xx mons xx days 01:02:03', $exception);
     }