diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index fdc4ff8..3233aec 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -721,8 +721,8 @@
 void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s);
 
 int vcl_segment_attach_session (uword segment_handle, uword rxf_offset,
-				uword txf_offset, uword mq_offset, u8 is_ct,
-				vcl_session_t *s);
+				uword txf_offset, uword mq_offset,
+				u32 mq_index, u8 is_ct, vcl_session_t *s);
 int vcl_segment_attach_mq (uword segment_handle, uword mq_offset, u32 mq_index,
 			   svm_msg_q_t **mq);
 int vcl_segment_discover_mqs (uword segment_handle, int *fds, u32 n_fds);