diff --git a/server/plugins-available/maildrop_plugin.inc.php b/server/plugins-available/maildrop_plugin.inc.php
index 9ba57237b69dcfc2782e27a3f2aced08ed23e87c..b748c0fd0d2b29f84bdd40fb5543e15229b213a0 100644
--- a/server/plugins-available/maildrop_plugin.inc.php
+++ b/server/plugins-available/maildrop_plugin.inc.php
@@ -116,6 +116,10 @@ class maildrop_plugin {
 			if(is_file($file)) unlink($file) or $app->log("Unable to delete file: $file",LOGLEVEL_WARN);
 			$file = $this->mailfilter_config_dir.'/'.$email_parts[1].'/'.$email_parts[0].'/.vacation.lst';
 			if(is_file($file)) unlink($file) or $app->log("Unable to delete file: $file",LOGLEVEL_WARN);
+			$file = $this->mailfilter_config_dir.'/'.$email_parts[1].'/'.$email_parts[0].'/.vacation.lst.gdbm';
+			if(is_file($file)) unlink($file) or $app->log("Unable to delete file: $file",LOGLEVEL_WARN);
+			$file = $this->mailfilter_config_dir.'/'.$email_parts[1].'/'.$email_parts[0].'/.vacation.lst.lock';
+			if(is_file($file)) unlink($file) or $app->log("Unable to delete file: $file",LOGLEVEL_WARN);
 			$file = $this->mailfilter_config_dir.'/'.$email_parts[1].'/'.$email_parts[0].'/.vacation.msg';
 			if(is_file($file)) unlink($file) or $app->log("Unable to delete file: $file",LOGLEVEL_WARN);
 			$file = $this->mailfilter_config_dir.'/'.$email_parts[1].'/'.$email_parts[0].'/.autoresponder';