diff --git a/tests/codeigniter/database/query_builder/escape_test.php b/tests/codeigniter/database/query_builder/escape_test.php
index 5df812c..5d575a3 100644
--- a/tests/codeigniter/database/query_builder/escape_test.php
+++ b/tests/codeigniter/database/query_builder/escape_test.php
@@ -13,9 +13,6 @@
 
 		Mock_Database_Schema_Skeleton::create_tables();
 		Mock_Database_Schema_Skeleton::create_data();
-
-		$this->pre = (strpos(DB_DRIVER, 'pgsql') === FALSE) ? '`' : '"';
-		$this->esc = (strpos(DB_DRIVER, 'mysql') === FALSE) ? '!' : '';
 	}
 
 	// ------------------------------------------------------------------------
@@ -25,9 +22,17 @@
 	 */
 	public function test_escape_like_percent_sign()
 	{
+		// Escape the like string
 		$string = $this->db->escape_like_str('\%foo');
 
-		$sql = "SELECT {$this->pre}value{$this->pre} FROM {$this->pre}misc{$this->pre} WHERE {$this->pre}key{$this->pre} LIKE '$string%' ESCAPE '$this->esc';";
+		if (strpos(DB_DRIVER, 'mysql') !== FALSE)
+		{
+			$sql = "SELECT `value` FROM `misc` WHERE `key` LIKE '$string%' ESCAPE '';";
+		}
+		else
+		{
+			$sql = 'SELECT "value" FROM "misc" WHERE "key" LIKE \''.$string.'%\' ESCAPE \'!\';';
+		}
 
 		$res = $this->db->query($sql)->result_array();
 		
@@ -42,14 +47,21 @@
 	 */
 	public function test_escape_like_backslash_sign()
 	{
+		// Escape the like string
 		$string = $this->db->escape_like_str('\\');
 
-		$sql = "SELECT {$this->pre}value{$this->pre} FROM {$this->pre}misc{$this->pre} WHERE {$this->pre}key{$this->pre} LIKE '$string%' ESCAPE '$this->esc';";
+		if (strpos(DB_DRIVER, 'mysql') !== FALSE)
+		{
+			$sql = "SELECT `value` FROM `misc` WHERE `key` LIKE '$string%' ESCAPE '';";
+		}
+		else
+		{
+			$sql = 'SELECT "value" FROM "misc" WHERE "key" LIKE \''.$string.'%\' ESCAPE \'!\';';
+		}
 
 		$res = $this->db->query($sql)->result_array();
 		
 		// Check the result
 		$this->assertEquals(2, count($res));
 	}
-
 }
\ No newline at end of file