diff --git a/libraries/ESP8266SdFat b/libraries/ESP8266SdFat
index af4ed0c5ec..b240d2231a 160000
--- a/libraries/ESP8266SdFat
+++ b/libraries/ESP8266SdFat
@@ -1 +1 @@
-Subproject commit af4ed0c5ec3084cb3883df51ec2052791ca2bff2
+Subproject commit b240d2231a117bbd89b79902eb54cae948ee2f42