diff --git a/Color_to_BW_Converter/README.md b/Color_to_BW_Converter/README.md
index 4993e02..0e34c80 100644
--- a/Color_to_BW_Converter/README.md
+++ b/Color_to_BW_Converter/README.md
@@ -11,3 +11,4 @@ A simple python script which takes colored image filename as argument and conver
 
 ## Example
 `$python bw_convert.py sample_image.jpg`
+`$python bw_convert.py sample_image.png`