diff --git a/cpp/CONTRIBUTING.md b/cpp/CONTRIBUTING.md
index 8711d87050..665b8cb985 100644
--- a/cpp/CONTRIBUTING.md
+++ b/cpp/CONTRIBUTING.md
@@ -49,7 +49,7 @@ And we made the following changes based on the guide:
 - 4 spaces for indentation
 - Adopt .cpp file extension instead of .cc extension
 - 120-character line length
-- The file name starts with the upper case
+- Camel-Cased file names
 
 
 ## Run unit test