diff --git a/unireader.lua b/unireader.lua
index f607e99ef..58a1f2843 100644
--- a/unireader.lua
+++ b/unireader.lua
@@ -113,6 +113,11 @@ end
 -- You need to overwrite following two methods if your
 -- reader supports highlight feature.
 ----------------------------------------------------
+
+function UniReader:startHighLightMode()
+	return
+end
+
 function UniReader:highLightText()
 	return
 end