diff --git a/wp-ffpc-class.php b/wp-ffpc-class.php
index f1e00fc..d1c0bb2 100644
--- a/wp-ffpc-class.php
+++ b/wp-ffpc-class.php
@@ -976,8 +976,10 @@ class WP_FFPC extends PluginAbstract {
 	private function deploy_advanced_cache( ) {
 
 		/* if no active site left no need for advanced cache :( */
-		if ( empty ( $this->global_config ) )
+		if ( empty ( $this->global_config ) ) {
+			unlink ( $this->acache );
 			return false;
+		}
 
 		/* add the required includes and generate the needed code */
 		$string[] = "<?php";