diff --git a/gancioff b/gancioff
index 0867817..a66f7c8 100755
--- a/gancioff
+++ b/gancioff
@@ -273,7 +273,7 @@ if (is_null($opts['do-post'])) $opts['do-post']=true;
 if (file_exists($conf['state_file_absolute_path'])) {
 	if (!is_file($conf['state_file_absolute_path'])) dieYoung("Error: «{$conf['state_file_absolute_path']}» exists but it’s not a file.\n",1);
 	if (!is_readable($conf['state_file_absolute_path'])) dieYoung("Error: «{$conf['state_file_absolute_path']}» exists but it’s not readable.\n",1);
-	if (!is_readable($conf['state_file_absolute_path'])) dieYoung("Error: «{$conf['state_file_absolute_path']}» exists but it’s not writable.\n",1);
+	if (!is_writeable($conf['state_file_absolute_path'])) dieYoung("Error: «{$conf['state_file_absolute_path']}» exists but it’s not writable.\n",1);
 	$guids=[];
 	$buff=file($conf['state_file_absolute_path'],FILE_IGNORE_NEW_LINES|FILE_SKIP_EMPTY_LINES);
 	$graceTime=365*24*60*60;