diff --git a/tests/TestCase/Database/Schema/PostgresSchemaTest.php b/tests/TestCase/Database/Schema/PostgresSchemaTest.php
index 9ea70e34a26..69d5abf15a2 100644
--- a/tests/TestCase/Database/Schema/PostgresSchemaTest.php
+++ b/tests/TestCase/Database/Schema/PostgresSchemaTest.php
@@ -1129,12 +1129,12 @@ protected function _getMockedDriver()
         $mock->expects($this->any())
             ->method('quote')
             ->will($this->returnCallback(function ($value) {
-                return '\'' . $value . '\'';
+                return "'$value'";
             }));
         $mock->expects($this->any())
             ->method('quoteIdentifier')
             ->will($this->returnCallback(function ($value) {
-                return '"' . $value . '"';
+                return "'$value'";
             }));
         $driver->connection($mock);
         return $driver;