diff --git a/lua.nanorc b/lua.nanorc
index 3cd76a9..9138a8f 100644
--- a/lua.nanorc
+++ b/lua.nanorc
@@ -71,3 +71,6 @@ color green "\-\-.*$"
 
 # Multiline comments
 color green start="\s*\-\-\s*\[\[" end="\]\]"
+
+# Trailing whitespaces
+color ,green "[[:space:]]+$"