diff --git a/erb.nanorc b/erb.nanorc
index 17bfed6..9a581b2 100644
--- a/erb.nanorc
+++ b/erb.nanorc
@@ -22,3 +22,5 @@ color brightcyan "##[^{].*$" "##$"
 color green start="<<-?'?EOT'?" end="^EOT"
 color brightcyan "(XXX|TODO|FIXME|\?\?\?)"
 
+## Trailing spaces
+color ,green "[[:space:]]+$"