diff --git a/openbsc/src/chan_alloc.c b/openbsc/src/chan_alloc.c
index bd3ec85..7ba679c 100644
--- a/openbsc/src/chan_alloc.c
+++ b/openbsc/src/chan_alloc.c
@@ -215,6 +215,9 @@
 		/* clear sapis */
 		memset(lchan->sapis, 0, ARRAY_SIZE(lchan->sapis));
 
+		/* clear multi rate config */
+		memset(&lchan->mr_conf, 0, sizeof(lchan->mr_conf));
+
 		/* Configure the time and start it so it will be closed */
 		lchan->release_timer.cb = auto_release_channel;
 		lchan->release_timer.data = lchan;