diff --git a/boost_expire.module b/boost_expire.module
index 83071b1..cccc87d 100644
--- a/boost_expire.module
+++ b/boost_expire.module
@@ -211,7 +211,9 @@ function boost_expire_flush_boost_page($base_dir, $path) {
   }
   // Node page
   else {
-    $file_to_del = $base_dir . $path . '_.html';
+    // $file_to_del = $base_dir . $path . '_.html';
+    // Use path alias instead of internal path
+    $file_to_del = $base_dir . drupal_get_path_alias($path) . '_.html';
   }  
 
   // Delete the corresponding cached file, if it exists.