diff --git a/koreader-base b/koreader-base
index 2542686fb..ad506faa7 160000
--- a/koreader-base
+++ b/koreader-base
@@ -1 +1 @@
-Subproject commit 2542686fb9be45dffae9893ed484a2fb1b22fedc
+Subproject commit ad506faa7ac12b92f576fcacc88f5c0c64ed2101