diff --git a/openbsc/include/openbsc/osmux.h b/openbsc/include/openbsc/osmux.h
index f4cb17a..8c01fd0 100644
--- a/openbsc/include/openbsc/osmux.h
+++ b/openbsc/include/openbsc/osmux.h
@@ -3,6 +3,8 @@
 
 #include <osmocom/netif/osmux.h>
 
+#define OSMUX_PORT	1984
+
 enum {
 	OSMUX_ROLE_BSC = 0,
 	OSMUX_ROLE_BSC_NAT,
diff --git a/openbsc/src/libmgcp/mgcp_osmux.c b/openbsc/src/libmgcp/mgcp_osmux.c
index ee79431..7c0b41c 100644
--- a/openbsc/src/libmgcp/mgcp_osmux.c
+++ b/openbsc/src/libmgcp/mgcp_osmux.c
@@ -24,8 +24,6 @@
 #include <openbsc/mgcp_internal.h>
 #include <openbsc/osmux.h>
 
-#define OSMUX_PORT	1984
-
 static struct osmo_fd osmux_fd;
 
 static LLIST_HEAD(osmux_handle_list);
@@ -395,9 +393,6 @@
 	}
 	osmux_fd.data = cfg;
 
-	if (!cfg->osmux_port)
-		cfg->osmux_port = OSMUX_PORT;
-
 	ret = mgcp_create_bind("0.0.0.0", &osmux_fd, cfg->osmux_port);
 	if (ret < 0) {
 		LOGP(DMGCP, LOGL_ERROR, "cannot bind OSMUX socket\n");
diff --git a/openbsc/src/libmgcp/mgcp_vty.c b/openbsc/src/libmgcp/mgcp_vty.c
index abb54d4..d40a3ce 100644
--- a/openbsc/src/libmgcp/mgcp_vty.c
+++ b/openbsc/src/libmgcp/mgcp_vty.c
@@ -1294,6 +1294,7 @@
 	int rc;
 	struct mgcp_trunk_config *trunk;
 
+	cfg->osmux_port = OSMUX_PORT;
 	/* Default to 4 messages */
 	cfg->osmux_batch = 4;