diff --git a/app/DoctrineMigrations/Version20160911214952.php b/app/DoctrineMigrations/Version20160911214952.php
index 7b85dc5e5..6ddeb767c 100644
--- a/app/DoctrineMigrations/Version20160911214952.php
+++ b/app/DoctrineMigrations/Version20160911214952.php
@@ -32,7 +32,7 @@ class Version20160911214952 extends AbstractMigration implements ContainerAwareI
         $redis = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "import_with_redis"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'import_with_redis'");
 
         if (false === $redis) {
             $this->addSql('INSERT INTO '.$this->getTable('craue_config_setting')." (name, value, section) VALUES ('import_with_redis', 0, 'import')");
@@ -41,7 +41,7 @@ class Version20160911214952 extends AbstractMigration implements ContainerAwareI
         $rabbitmq = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "import_with_rabbitmq"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'import_with_rabbitmq'");
 
         if (false === $rabbitmq) {
             $this->addSql('INSERT INTO '.$this->getTable('craue_config_setting')." (name, value, section) VALUES ('import_with_rabbitmq', 0, 'import')");
diff --git a/app/DoctrineMigrations/Version20161031132655.php b/app/DoctrineMigrations/Version20161031132655.php
index 89b660183..770ad2d8e 100644
--- a/app/DoctrineMigrations/Version20161031132655.php
+++ b/app/DoctrineMigrations/Version20161031132655.php
@@ -32,7 +32,7 @@ class Version20161031132655 extends AbstractMigration implements ContainerAwareI
         $images = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "download_images_enabled"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'download_images_enabled'");
 
         $this->skipIf(false !== $images, 'It seems that you already played this migration.');
 
diff --git a/app/DoctrineMigrations/Version20161117071626.php b/app/DoctrineMigrations/Version20161117071626.php
index e65598a9b..d864888f1 100644
--- a/app/DoctrineMigrations/Version20161117071626.php
+++ b/app/DoctrineMigrations/Version20161117071626.php
@@ -32,7 +32,7 @@ class Version20161117071626 extends AbstractMigration implements ContainerAwareI
         $share = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "share_unmark"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'share_unmark'");
 
         if (false === $share) {
             $this->addSql('INSERT INTO '.$this->getTable('craue_config_setting')." (name, value, section) VALUES ('share_unmark', 0, 'entry')");
@@ -41,7 +41,7 @@ class Version20161117071626 extends AbstractMigration implements ContainerAwareI
         $unmark = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "unmark_url"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'unmark_url'");
 
         if (false === $unmark) {
             $this->addSql('INSERT INTO '.$this->getTable('craue_config_setting')." (name, value, section) VALUES ('unmark_url', 'https://unmark.it', 'entry')");
diff --git a/app/DoctrineMigrations/Version20161122144743.php b/app/DoctrineMigrations/Version20161122144743.php
index 02113031c..388a0e4b0 100644
--- a/app/DoctrineMigrations/Version20161122144743.php
+++ b/app/DoctrineMigrations/Version20161122144743.php
@@ -35,7 +35,7 @@ class Version20161122144743 extends AbstractMigration implements ContainerAwareI
         $access = $this->container
             ->get('doctrine.orm.default_entity_manager')
             ->getConnection()
-            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting').' WHERE name = "restricted_access"');
+            ->fetchArray('SELECT * FROM '.$this->getTable('craue_config_setting')." WHERE name = 'restricted_access'");
 
         $this->skipIf(false !== $access, 'It seems that you already played this migration.');