diff --git a/frontend/apps/reader/modules/readerconfig.lua b/frontend/apps/reader/modules/readerconfig.lua
index 4685c7b87..feb2dc6c1 100644
--- a/frontend/apps/reader/modules/readerconfig.lua
+++ b/frontend/apps/reader/modules/readerconfig.lua
@@ -79,7 +79,9 @@ end
 
 -- event handler for readercropping
 function ReaderConfig:onCloseConfigMenu()
-    self.config_dialog:closeDialog()
+    if self.config_dialog then
+        self.config_dialog:closeDialog()
+    end
 end
 
 function ReaderConfig:onReadSettings(config)