diff --git a/app/DoctrineMigrations/Version20170511211659.php b/app/DoctrineMigrations/Version20170511211659.php
index 0ea96621c..18c3c7691 100644
--- a/app/DoctrineMigrations/Version20170511211659.php
+++ b/app/DoctrineMigrations/Version20170511211659.php
@@ -27,12 +27,12 @@ class Version20170511211659 extends WallabagMigration
                 $this->addSql(<<<EOD
 CREATE TEMPORARY TABLE __temp__wallabag_annotation AS
     SELECT id, user_id, entry_id, text, created_at, updated_at, quote, ranges
-    FROM ${annotationTableName}
+    FROM {$annotationTableName}
 EOD
                 );
                 $this->addSql('DROP TABLE ' . $annotationTableName);
                 $this->addSql(<<<EOD
-CREATE TABLE ${annotationTableName}
+CREATE TABLE {$annotationTableName}
 (
     id INTEGER PRIMARY KEY NOT NULL,
     user_id INTEGER DEFAULT NULL,
@@ -42,16 +42,16 @@ CREATE TABLE ${annotationTableName}
     updated_at DATETIME NOT NULL,
     quote CLOB NOT NULL,
     ranges CLOB NOT NULL,
-    CONSTRAINT FK_A7AED006A76ED395 FOREIGN KEY (user_id) REFERENCES ${userTableName} (id),
-    CONSTRAINT FK_A7AED006BA364942 FOREIGN KEY (entry_id) REFERENCES ${entryTableName} (id) ON DELETE CASCADE
+    CONSTRAINT FK_A7AED006A76ED395 FOREIGN KEY (user_id) REFERENCES {$userTableName} (id),
+    CONSTRAINT FK_A7AED006BA364942 FOREIGN KEY (entry_id) REFERENCES {$entryTableName} (id) ON DELETE CASCADE
 );
-CREATE INDEX IDX_A7AED006A76ED395 ON ${annotationTableName} (user_id);
-CREATE INDEX IDX_A7AED006BA364942 ON ${annotationTableName} (entry_id);
+CREATE INDEX IDX_A7AED006A76ED395 ON {$annotationTableName} (user_id);
+CREATE INDEX IDX_A7AED006BA364942 ON {$annotationTableName} (entry_id);
 EOD
                 );
 
                 $this->addSql(<<<EOD
-INSERT INTO ${annotationTableName} (id, user_id, entry_id, text, created_at, updated_at, quote, ranges)
+INSERT INTO {$annotationTableName} (id, user_id, entry_id, text, created_at, updated_at, quote, ranges)
 SELECT id, user_id, entry_id, text, created_at, updated_at, quote, ranges
 FROM __temp__wallabag_annotation;
 EOD