diff --git a/include/osmocom/mgcp/mgcp_internal.h b/include/osmocom/mgcp/mgcp_internal.h
index 66a26bd..f143988 100644
--- a/include/osmocom/mgcp/mgcp_internal.h
+++ b/include/osmocom/mgcp/mgcp_internal.h
@@ -32,11 +32,6 @@
 
 #define CI_UNUSED 0
 
-enum mgcp_trunk_type {
-	MGCP_TRUNK_VIRTUAL,
-	MGCP_TRUNK_E1,
-};
-
 struct mgcp_rtp_stream_state {
 	uint32_t ssrc;
 	uint16_t last_seq;
diff --git a/include/osmocom/mgcp/mgcp_trunk.h b/include/osmocom/mgcp/mgcp_trunk.h
index 78d65e4..2bd55e6 100644
--- a/include/osmocom/mgcp/mgcp_trunk.h
+++ b/include/osmocom/mgcp/mgcp_trunk.h
@@ -1,5 +1,10 @@
 #pragma once
 
+enum mgcp_trunk_type {
+	MGCP_TRUNK_VIRTUAL,
+	MGCP_TRUNK_E1,
+};
+
 struct mgcp_trunk {
 	struct llist_head entry;