diff --git a/src/osmo-bsc/lchan_fsm.c b/src/osmo-bsc/lchan_fsm.c
index 7cbba4499..2b7dc9753 100644
--- a/src/osmo-bsc/lchan_fsm.c
+++ b/src/osmo-bsc/lchan_fsm.c
@@ -22,6 +22,7 @@
 
 #include <osmocom/gsm/rsl.h>
 #include <osmocom/core/byteswap.h>
+#include <osmocom/gsm/protocol/gsm_08_08.h>
 
 #include <osmocom/bsc/debug.h>
 #include <osmocom/bsc/lchan_fsm.h>