diff --git a/lib/Doctrine/ORM/Tools/SchemaValidator.php b/lib/Doctrine/ORM/Tools/SchemaValidator.php
index f94234487..93a5013be 100644
--- a/lib/Doctrine/ORM/Tools/SchemaValidator.php
+++ b/lib/Doctrine/ORM/Tools/SchemaValidator.php
@@ -141,13 +141,13 @@ class SchemaValidator
 
                 // Verify inverse side/owning side match each other
                 $targetAssoc = $targetMetadata->associationMappings[$assoc['inversedBy']];
-                if ($assoc['type'] == ClassMetadata::ONE_TO_ONE && $targetAssoc['type'] !== ClassMetadata::ONE_TO_ONE){
+                if ($assoc['type'] == ClassMetadataInfo::ONE_TO_ONE && $targetAssoc['type'] !== ClassMetadataInfo::ONE_TO_ONE){
                     $ce[] = "If association " . $class->name . "#" . $fieldName . " is one-to-one, then the inversed " .
                             "side " . $targetMetadata->name . "#" . $assoc['inversedBy'] . " has to be one-to-one as well.";
-                } else if ($assoc['type'] == ClassMetadata::MANY_TO_ONE && $targetAssoc['type'] !== ClassMetadata::ONE_TO_MANY){
+                } else if ($assoc['type'] == ClassMetadataInfo::MANY_TO_ONE && $targetAssoc['type'] !== ClassMetadataInfo::ONE_TO_MANY){
                     $ce[] = "If association " . $class->name . "#" . $fieldName . " is many-to-one, then the inversed " .
                             "side " . $targetMetadata->name . "#" . $assoc['inversedBy'] . " has to be one-to-many.";
-                } else if ($assoc['type'] == ClassMetadata::MANY_TO_MANY && $targetAssoc['type'] !== ClassMetadata::MANY_TO_MANY){
+                } else if ($assoc['type'] == ClassMetadataInfo::MANY_TO_MANY && $targetAssoc['type'] !== ClassMetadataInfo::MANY_TO_MANY){
                     $ce[] = "If association " . $class->name . "#" . $fieldName . " is many-to-many, then the inversed " .
                             "side " . $targetMetadata->name . "#" . $assoc['inversedBy'] . " has to be many-to-many as well.";
                 }