diff --git a/ts.nanorc b/ts.nanorc
index 9e09c7c..f233465 100644
--- a/ts.nanorc
+++ b/ts.nanorc
@@ -37,3 +37,6 @@ color red "\\[0-7][0-7]?[0-7]?|\\x[0-9a-fA-F]+|\\[bfnrt'"\?\\]"
 ## Comments
 color magenta start="/\*" end="\*/"
 color magenta "//.*$"
+
+## Trailing whitespace
+color ,green "[[:space:]]+$"