diff --git a/perl.nanorc b/perl.nanorc
index 3c05ad5..3e629b9 100644
--- a/perl.nanorc
+++ b/perl.nanorc
@@ -11,3 +11,6 @@ color white "[sm]/.*/"
 color white start="(^use| = new)" end=";"
 color green "#.*"
 color yellow start="<< 'STOP'" end="STOP"
+
+## Trailing spaces
+color ,green "[[:space:]]+$"