diff --git a/src/pcm/pcm_route.c b/src/pcm/pcm_route.c
index 204593b4..776e1500 100644
--- a/src/pcm/pcm_route.c
+++ b/src/pcm/pcm_route.c
@@ -772,10 +772,11 @@ int snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
 	return 0;
 }
 
-static int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
-				     unsigned int tt_csize, unsigned int tt_ssize,
-				     unsigned int *tt_cused, unsigned int *tt_sused,
-				     int schannels)
+/* this functions is used from pcm_plug.c */
+int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
+			      unsigned int tt_csize, unsigned int tt_ssize,
+			      unsigned int *tt_cused, unsigned int *tt_sused,
+			      int schannels)
 {
 	int cused = -1;
 	int sused = -1;