diff --git a/koreader-base b/koreader-base
index ad506faa7..73ffa9e2d 160000
--- a/koreader-base
+++ b/koreader-base
@@ -1 +1 @@
-Subproject commit ad506faa7ac12b92f576fcacc88f5c0c64ed2101
+Subproject commit 73ffa9e2da59cddd1f6c1136c3cc0f80b7e37f97