diff --git a/app/DoctrineMigrations/Version20170511211659.php b/app/DoctrineMigrations/Version20170511211659.php
index d19b5ac5c..f2d5cf5e8 100644
--- a/app/DoctrineMigrations/Version20170511211659.php
+++ b/app/DoctrineMigrations/Version20170511211659.php
@@ -74,7 +74,7 @@ EOD
                 break;
 
             case 'postgresql':
-                $this->addSql('ALTER TABLE '.$tableName.' ALTER COLUMN quote TYPE TEXT NOT NULL ');
+                $this->addSql('ALTER TABLE '.$tableName.' ALTER COLUMN quote TYPE TEXT');
                 break;
         }
     }
@@ -93,7 +93,7 @@ EOD
                 break;
 
             case 'postgresql':
-                $this->addSql('ALTER TABLE '.$tableName.' ALTER COLUMN quote TYPE VARCHAR(255) NOT NULL ');
+                $this->addSql('ALTER TABLE '.$tableName.' ALTER COLUMN quote TYPE VARCHAR(255)');
                 break;
         }
     }