diff --git a/lib/mfrc522/source/loop.php b/lib/mfrc522/source/loop.php
index d7fa994..9f94774 100755
--- a/lib/mfrc522/source/loop.php
+++ b/lib/mfrc522/source/loop.php
@@ -263,7 +263,7 @@
 		/* (1) Read accesses */
 		$f_auth      = new SplFileObject(AUTH_CONF, 'r');
 		$f_actions   = new SplFileObject(ACTIONS_CONF, 'r');
-		$f_gstate    = new SplFileObject(STATE_CONF, 'w');
+		$f_gstate    = new SplFileObject(STATE_CONF, 'r+');
 
 		/* (2) Append accesses (logs) */
 		$f_accesslog = new SplFileObject(DEFAULT_DATA, 'a');