diff --git a/lib/migration.js b/lib/migration.js
index f0bc910..060a271 100644
--- a/lib/migration.js
+++ b/lib/migration.js
@@ -420,7 +420,7 @@ function mixinMigration(MySQL, mysql) {
     var definition = this.getModelDefinition(model);
     var fk = definition.settings.foreignKeys[keyName];
     if (fk) {
-      var fkEntity = typeof fk.entity === "object" ? fk.entity : {name: fk.entity}; //this.getModelDefinition(fk.entity);
+      var fkEntity = typeof fk.entity === 'object' ? fk.entity : {name: fk.entity}; //this.getModelDefinition(fk.entity);
 
       //TODO verify that the other model in the same DB
       return ' CONSTRAINT ' + this.client.escapeId(fk.name) +