diff --git a/frontend/apps/reader/modules/readerdictionary.lua b/frontend/apps/reader/modules/readerdictionary.lua
index b300b9292..2c4bd6ac9 100644
--- a/frontend/apps/reader/modules/readerdictionary.lua
+++ b/frontend/apps/reader/modules/readerdictionary.lua
@@ -1,11 +1,13 @@
 local InputContainer = require("ui/widget/container/inputcontainer")
 local DictQuickLookup = require("ui/widget/dictquicklookup")
+local InfoMessage = require("ui/widget/infomessage")
 local UIManager = require("ui/uimanager")
 local Geom = require("ui/geometry")
 local Screen = require("device").screen
 local JSON = require("JSON")
 local DEBUG = require("dbg")
 local _ = require("gettext")
+local T = require("ffi/util").template
 
 local ReaderDictionary = InputContainer:new{}
 
@@ -111,6 +113,10 @@ end
 function ReaderDictionary:onUpdateDefaultDict(dict)
     DEBUG("make default dictionary:", dict)
     self.default_dictionary = dict
+    UIManager:show(InfoMessage:new{
+        text = T(_("%1 is now the default dictionary for this document."), dict),
+        timeout = 2,
+    })
     return true
 end