diff --git a/sys/src/cmd/acme/look.c b/sys/src/cmd/acme/look.c
index d80f3b8c9..d8882995a 100644
--- a/sys/src/cmd/acme/look.c
+++ b/sys/src/cmd/acme/look.c
@@ -7,7 +7,6 @@
 #include <keyboard.h>
 #include <frame.h>
 #include <fcall.h>
-#include <regexp.h>
 #include <plumb.h>
 #include "dat.h"
 #include "fns.h"