diff --git a/frontend/ui/reader/readerview.lua b/frontend/ui/reader/readerview.lua
index 1967790a0..b6d1b652d 100644
--- a/frontend/ui/reader/readerview.lua
+++ b/frontend/ui/reader/readerview.lua
@@ -1,3 +1,4 @@
+require "ui/widget/group"
 require "ui/reader/readerflip"
 require "ui/reader/readerfooter"
 require "ui/reader/readerdogear"