diff --git a/pkt-line.c b/pkt-line.c
index af83a19..236dd3a 100644
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -4,6 +4,7 @@
 #include "gettext.h"
 #include "hex.h"
 #include "run-command.h"
+#include "sideband.h"
 #include "trace.h"
 #include "write-or-die.h"