diff --git a/koreader-base b/koreader-base
index 375d538df..adfd78e69 160000
--- a/koreader-base
+++ b/koreader-base
@@ -1 +1 @@
-Subproject commit 375d538df36a91b25c9d2556adcf6f33f028ad57
+Subproject commit adfd78e69146657566f18fa8815ff0028b1f4e21