diff --git a/runtime/doc/if_perl.txt b/runtime/doc/if_perl.txt
index f1bf923..b0bad1e 100644
--- a/runtime/doc/if_perl.txt
+++ b/runtime/doc/if_perl.txt
@@ -55,7 +55,7 @@
 			working: >
 				:perl VIM::Msg("Hello")
 
-:pe[rl] << [endmarker]
+:pe[rl] << [trim] [{endmarker}]
 {script}
 {endmarker}
 			Execute Perl script {script}.