diff --git a/koreader-base b/koreader-base
index 632788cda..4fa528cf4 160000
--- a/koreader-base
+++ b/koreader-base
@@ -1 +1 @@
-Subproject commit 632788cda7378f9d8bdfc94c579acf96c5597f1f
+Subproject commit 4fa528cf40d063a0081dca476ccebcf89a5b39b3