diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
index 1e74107..77b9515 100644
--- a/system/database/DB_cache.php
+++ b/system/database/DB_cache.php
@@ -63,14 +63,12 @@
 	
 		// Add a trailing slash to the path if needed
 		$path = preg_replace("/(.+?)\/*$/", "\\1/",  $path);
-	
-		if ( ! is_dir($path) OR ! is_writable($path))
+		
+		// Load the file helper
+		$this->CI->load->helper('file');
+
+		if ( ! is_dir($path) OR ! is_really_writable($path))
 		{
-			if ($this->CI->db->db_debug)
-			{
-				return $this->CI->db->display_error('db_invalid_cache_path');
-			}
-			
 			// If the path is wrong we'll turn off caching
 			return $this->CI->db->cache_off();
 		}