diff --git a/openbsc/src/gsm_04_11.c b/openbsc/src/gsm_04_11.c
index 3492f1f..57d8089 100644
--- a/openbsc/src/gsm_04_11.c
+++ b/openbsc/src/gsm_04_11.c
@@ -48,6 +48,7 @@
 #include <openbsc/paging.h>
 #include <openbsc/bsc_rll.h>
 #include <openbsc/chan_alloc.h>
+#include <openbsc/bsc_api.h>
 
 #define GSM411_ALLOC_SIZE	1024
 #define GSM411_ALLOC_HEADROOM	128