diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c
index ac1e852..0165e8a 100644
--- a/src/gsm/gsm0808_utils.c
+++ b/src/gsm/gsm0808_utils.c
@@ -756,7 +756,7 @@
 		if (i >= GSM0808_CELL_ID_LIST2_MAXLEN)
 			return -ENOSPC;
 		cil->id_list[i++].ci = osmo_load16be(ci_be++);
-		consumed += elemlen;
+		*consumed += elemlen;
 		remain -= elemlen;
 	}
 	return i;