diff --git a/frontend/ui/widget/textviewer.lua b/frontend/ui/widget/textviewer.lua
index 0767fe04e..b6e1a92d6 100644
--- a/frontend/ui/widget/textviewer.lua
+++ b/frontend/ui/widget/textviewer.lua
@@ -63,7 +63,6 @@ local TextViewer = InputContainer:new{
 }
 
 function TextViewer:init()
-    local orig_dimen = self.frame and self.frame.dimen or Geom:new{}
     -- calculate window dimension
     self.align = "center"
     self.region = Geom:new{
@@ -221,9 +220,7 @@ function TextViewer:init()
         self.movable,
     }
     UIManager:setDirty(self, function()
-        local update_region = self.frame.dimen:combine(orig_dimen)
-        logger.dbg("update region", update_region)
-        return "partial", update_region
+        return "partial", self.frame.dimen
     end)
 end