diff --git a/.gitattributes b/.gitattributes
index b84b57d149..55bb72f281 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -10,7 +10,9 @@
 *.hpp text eol=lf
 *.txt text eol=lf
 
-# auto remove white space
+# Define files to support auto-remove trailing white space
+# Need to run the command below, before add modified file(s) to the staging area
+# git config filter.trimspace.clean 'sed -e "s/[[:space:]]*$//g"'
 *.cpp filter=trimspace
 *.c filter=trimspace
 *.h filter=trimspacecpp