diff --git a/include/openbsc/misdn.h b/include/openbsc/misdn.h
index f3f1980..09dc5ba 100644
--- a/include/openbsc/misdn.h
+++ b/include/openbsc/misdn.h
@@ -22,5 +22,6 @@
 
 int mi_setup(struct gsm_bts *bts, int cardnr, 
 	     void (cb)(int event, struct gsm_bts *bts));
+void mi_set_pcap_fd(int fd);
 
 #endif